# List of Lewis episodes

The following is a list of the 33-episode run for the British drama Lewis, which aired on ITV for nine series (2006–2015).

## Overview

| Series | Series | Episodes | Series premiere | Series finale | DVD release date | DVD release date | DVD release date | Average UK viewers (in millions) |
| Series | Series | Episodes | Series premiere | Series finale | Region 2 | Region 4 | Region 1 | Average UK viewers (in millions) |
| | 1 | 4 | 29 January 2006 | 4 March 2007 | 12 March 2007 | 31 March 2008 | 5 August 2008 | 9.02 |
| | 2 | 4 | 24 February 2008 | 16 March 2008 | 7 April 2008 | 18 May 2009 | 5 August 2008 | 8.57 |
| | 3 | 4 | 22 March 2009 | 12 April 2009 | 13 April 2009 | 10 March 2010 | 13 October 2009 | 7.04 |
| | 4 | 4 | 2 May 2010 | 30 May 2010 | 31 May 2010 | 6 June 2011 | 12 October 2010 | 7.83 |
| | 5 | 4 | 3 April 2011 | 24 April 2011 | 25 April 2011 | 4 April 2012 | 13 September 2011 | 6.95 |
| | 6 | 4 | 16 May 2012 | 6 June 2012 | 11 June 2012 | 7 August 2013 | 24 July 2012 | 6.63 |
| | 7 | 3 | 7 January 2013 | 11 February 2013 | 18 February 2013 | 6 August 2014 | 25 June 2013 | 7.94 |
| | 8 | 3 | 10 October 2014 | 14 November 2014 | 17 November 2014 | 23 September 2015 | 25 November 2014 | 6.04 |
| | 9 | 3 | 6 October 2015 | 10 November 2015 | 30 November 2015 | 6 July 2016 | 23 August 2016 | 5.83 |

## Episodes
### Series 1 (2006–07)

| # | Episode Title | Directed by | Writer | Original air date | Viewers (in millions) |
| 1 | "Reputation" | Bill Anderson | Russell Lewis (Story), Stephen Churchett (Screenplay) | 29 January 2006 (2006-1-29) | 11.31 |
| Detective Inspector Robbie Lewis returns to Oxford after two years' secondment to the British Virgin Islands, where he was sent to recover from his wife's death. His new boss, DCS Jean Innocent, reluctantly assigns him to the murder of Oxford mathematics student Regan Peverill, who is shot while participating in a sleep study. The key-code someone used to access the sleep lab is assigned to a fellow maths student, Daniel Griffon, but Daniel's tutor Ivor Denniston provides him with an alibi. Daniel is a maladjusted young man who will soon inherit his father's automotive empire. He is disruptive and has no respect for his uncle Rex, who now heads the company. The future of the company rests on an impending deal with Japanese investors who insist that family unity is all important. Daniel is convinced that his uncle was behind the death in an automobile accident of his father, a famous race car driver. When he was 15, Daniel was arrested on suspicion of tampering with his uncle's car, and Lewis is surprised to learn that his former boss, Chief Inspector Morse, had led that investigation. Rex Griffon admits having a one-night stand with Peverill and asking her to keep quiet about it. Now Daniel thinks Regan was killed by Rex, whom he also suspected of having an affair with his mother Trudi. Tom Pollock, the Griffon's finance director, goes to the sleep lab looking for Daniel and appears to be about to enter a key-code when the security guard lets him in. Back in his college rooms, Daniel is surprised to receive an email that Regan sent before her death. Trudi Griffon is awakened in the middle of the night by a gunshot and finds someone shot in the shower, while a hooded figure runs out of the house. The next day, Daniel is found in his scull on the river, an apparent suicide. When Lewis and Hathaway tell her of Daniel's death, Trudi does not mention the shooting in the house. Reviewing the scene of Daniel's death, Hathaway notices the scull's oars are not set up correctly and were not the type Daniel preferred. Other evidence indicates that he was killed at a different location. Tom Pollock's body is found in the boot of his car, after it was stolen by joy-riding teenagers. He and his daughter Jessica lived in the Griffon's mansion, and he was the person shot in the shower. Pollack, Daniel and Regan were all shot with the same gun. Jessica Pollock, who is competing for a prestigious music award, attempts suicide at the spot where Daniel's body was found but is rescued. Lewis is sure that a cryptic note Morse had left in the case file of Daniel's previous arrest – "Polo not king after all" – is important. He and Hathaway realize that "king" refers to Rex and "Polo" refers to Pollock, who like Polonius in Hamlet was Rex's right-hand man. Pollack, not Rex, was Trudi's lover, and video evidence shows Rex leaving Pollock's car at a railway station car park. Rex says that Trudi had called him to say that Daniel had killed Pollock in the shower, so he disposed of the body. Trudi admits to Lewis that Pollock was actually Daniel's father. After an argument in which she told her husband that he wasn't Daniel's father, he drove off furiously, crashed the car and died. A mathematical clue provided by a friend of Daniel's leads Lewis to the solution for all three deaths. His tutor Ivor Denniston had killed Regan because she came up with a proof for a challenging mathematical problem that revealed a flaw in an important paper of his. He then killed Daniel since he'd also received a copy of Regan's proof, and he mistakenly killed Pollock, intending to kill Rex and implicate Daniel. As Lewis arrests him, he reveals that he has poisoned himself and his wife, who has motor neuron disease. Along with the written clue, the episode includes several other references to Morse. When leaving Heathrow Airport, Lewis is nearly run over by a red Jaguar Mark 2; he knows the word "bruxism" (tooth-grinding) as a result of spending "15 years working for a crossword fanatic"; Trudi Griffon knew Morse and says, "He was a man you could talk to"; Jessica Pollock is being examined for the "Endeavour Award", which had been endowed by an anonymous donor for music that "gives solace to the soul". Lewis's new bagman, DS James Hathaway, is in some ways a mirror image of Morse. He went to Cambridge, rather than Oxford; and while Morse was an atheist, Hathaway studied theology and considered joining the priesthood. The plot bears some self-conscious parallels to Hamlet, and there are references to King Lear and A Tale of Two Cities. The screenplay is also mathematically literate: professor Ivor Denniston dismisses his class with the joke that there's a sign reading "Heisenberg might have lived here." Lewis asks: "That Heisenberg joke – the uncertainty principle?” to get the riposte "I'm not sure." There are various abstruse clues: the griffin is a cross between an eagle and a lion; perfect numbers are those that are the sum of their factors: 6 = 1+2+3; 28 = 1+2+4+7+14; the next two are 496 and 8,128 – which turns out to be Daniel's computer password. Denniston was probably the only one who would have guessed that Daniel's key code to the sleep lab was '12 47 14'. |||||||
| 2 | "Whom the Gods Would Destroy" | Marc Jobst | Daniel Boyle | 18 February 2007 (2007-2-18) | 8.11 |
| DI Lewis and DS Hathaway investigate the murder of artist Dean Greely, beaten to death near his canal boat. As the investigation continues, they discover that Greely and three other men had formed a club during their Oxford student days, the Sons of the Twice Born, which refers to the Greek god Dionysus, whose worshipers were admired by philosopher Nietzsche: Harry Bundrick, who runs a bicycle shop with his mother, Dean Greely, a failed painter staying in a canal narrowboat, Sefton Linn, college master and prospective vice-chancellor, Theodor Platt, last remnant of a wealthy family, failed author and alcoholic. He uses a wheelchair since being involved in a head-on collision when under the influence, causing the second driver's death, which particularly irritates Lewis. The men claim to have little current contact with one another and initially deny the existence of the club. They each have a gold ring bearing the image of Dionysus. Hathaway happens upon the three living members meeting with Professor Margaret Gold, who previously had translated for Lewis Ancient Greek numerals in Dean's address book as phone numbers, leading him to the other three. She later tells Lewis that the four of them met as students in her discussion group, but they left the group later and developed a reputation for drink and drugs. When the four of them fell out, Bundrick attempted suicide. Linn appears to have gone missing, but neither Platt nor Bundrick claim to know where he is. When Linn is found shot dead, it becomes apparent that the group has a secret from their student days and that someone is out for revenge. Harry Bundrick appears about to confess something to Lewis, but they are interrupted by his mother, who hated Linn and had sent letters to the college council designed to prevent Linn's appointment. It turns out that the murders have been masterminded by two women. Tina Daniels had been a prostitute and had recommended her friend Patsy Worth to Harry Bundrick. Patsy got drunk or drugged with the Sons of the Twice Born, and when she passed out, they decided to murder her in order to take out her adrenal gland and extract the adrenochrome, which was reputed (by Hunter S. Thompson) to give a very good high. Platt actually carried out the murder. Patsy had a daughter, Anne, who was brought up by Tina. Anne trained as a nurse and got a job as a personal assistant to Platt. A year later she married him, which Platt claims she did because of a potential inheritance. When Platt chokes on some food, Anne saves his life in Lewis’s presence. although, as Platt later tells her, she could have let him die. The couple seem to be reconciled, but in reality Tina and Anne are manipulating the Sons of the Twice Born to murder each other: First Tina, posing as a journalist named ‘Fury’ (an allusion to the avenging Furies of classical literature), tells Linn that Greely is near death and is planning to come clean, so he must kill him if the secret is to be kept; She calls Platt threatening his wife and implying she manipulated Linn into killing Greely, which leads Platt to kill Linn; She had contacted Harry Bundrick after sending him a note with the single word "adrenochrome", but he refused to do what she asked, which was kill Linn. She decides that Harry Bundrick is to be spared since he admitted to her what was done to Patsy and has shown remorse. This leaves Platt, who is the only one who knows where Patsy is buried. Anne telephones him, claiming to be held hostage and that her abductor will release her if he tells her where Patsy's grave is. He tells her she is buried by the statue of Dionysus in their park. Anne then walks into the room and reveals the plot. When he threatens her, she sets their two Belgian Shepherd dogs on him, which tear him to shreds. Patsy’s skeleton is disinterred. Anne had sent Lewis a cryptic note reading "His best friends killed him because of a boast", which could relate to Actaeon who had boasted of being a better shot than Diana and was killed by his dogs. Hathaway says: "If Anne sent the riddle, she is guilty of premeditated murder. Doesn't it make her just like Platt?" Lewis replies: "Not in my book." Tina and Anne thus stand to face a low penalty, if any, and to become very rich women by inheriting the Platt estate. |||||||
| 3 | "Old School Ties" | Sarah Harding | Alan Plater | 25 February 2007 (2007-2-25) | 7.81 |
| DI Lewis is less than pleased when he and DS Hathaway are assigned to protect Nicky Turnbull, a former convicted cybercriminal and "rock and roll hacker" turned successful author. Turnbull is invited to speak at the Oxford Union. He is met by a welcoming committee composed of Caroline Morton, president of the Union; Jo Gilchrist, student journalist with ambitions to be a tabloid editor; Stephen Gilchrist, her brother, a serious scholar; and David Harvey, a rugby player who had to retire because of an injury. Turnbull cheated two Oxford colleges in his computer scam and has received death threats, so Lewis and Hathaway are tasked with babysitting him. Although Turnbull is everything Lewis dislikes - a celebrity criminal and a "professional Geordie" - he grits his teeth and does the job. Turnbull gives his lecture and afterwards invites his audience to champagne in his hotel, in the converted prison in Oxford Castle. On the way there he is nearly run over by a Jeep, but once he arrives at the hotel, he tells Lewis to go home. Things take a more serious turn the following morning when Jo is found strangled with a revolver by her side in the hotel room next to Turnbull’s, which had been booked in Lewis’s name. Caroline emerges from Turnbull's room, having spent the night with him. After identifying her body, Jo's brother Stephen interrupts Turnbull's book signing by throwing his bicycle through the bookstore window, claiming "if it wasn't for him, Jo would still be alive." Then, while walking back to the hotel with Lewis, Turnbull is fatally shot by a sniper, right after admitting that the claim of death threats was a publicity stunt. When Stephen Gilchrist comes to confess to smashing the window, he tells Lewis that Jo had requested the gun from David Harvey as a birthday present. Turnbull’s wife Diane, who is also his agent, comes to identify his body. In a surprising coincidence, she was at school with Lewis, and he was her first boyfriend. Caroline admits she and Jo planned to catch Turnbull in a "honey trap" that would give Jo a juicy story for the tabloid press. Jo was going to brandish the gun to frighten him, which was not loaded, but she never came into the room. Lewis visits the prison where Turnbull had been incarcerated and where he met his wife, who was running a drama therapy program. He learns that Turnbull had embellished his book with experiences from some of the other prisoners and that he was functionally illiterate when he arrived there, meaning that Diane must have actually written his book. As she is uncomfortable staying at the hotel where two murders took place, Diane stays at Lewis's home for the night. In another coincidence, David Harvey was at the same public school as Hathaway and remembers him as the head boy. He tells him the other students referred to him ‘WC’, short for ‘Wolfgang Christ’, as they couldn’t work out whether he wanted to be Mozart or Jesus. It is revealed that Hathaway plays the guitar, specifically world music mixed with jazz, rock and medieval madrigals. Diane tells Lewis that Turnbull's speech was set up by Harvey, not by Jo Gilchrist as he'd been told. When Turnbull hacked the Oxford colleges' investment accounts, stealing large amounts of money, Harvey’s father lost his job and committed suicide. On the night of Turnbull’s talk, Harvey brought Jo bullets for the gun he'd given her, hoping she might shoot him. But she refused, saying she found him “kind of cute”, leading Harvey to kill her. The next day he shot Turnbull from the hotel roof. |||||||
| 4 | "Expiation" | Dan Reed | Guy Andrews | 4 March 2007 (2007-3-4) | 8.85 |
| In Summertown an Oxford housewife is found hanged in her home. The locum pathologist states it is a suicide but Lewis realises it was a staged murder, which sets him at odds with his boss, Innocent. Lewis and Hathaway learn through an unusual source, that of terminally ill Oxford college don wanting an unusual favour, that while on holiday in Madagascar the victim and her closest friend swapped husbands. What from that past was worth killing for? Josette Simon guest stars in this episode. |||||||

### Series 2 (2008)

| # | Episode | Directed by | Writer | Original air date | Viewers (in millions) |
| 5 | "And the Moonbeams Kiss the Sea" | Dan Reed | Alan Plater | 24 February 2008 (2008-2-24) | 8.90 |
| The murders of Reg Chapman, a maintenance worker at the Bodleian Library and gambling addict, and Nell Buckley, a popular art student, seem unrelated. However, the police learn that Chapman stole historic books from the library so that Nell and another student Philip, a brilliant, autistic young painter, could use blank pages to innocently forge letters by the poet Shelley for the international collectors' market. When both victims, for different reasons, threatened to expose the mastermind behind the scam, they were killed. |||||||
| 6 | "Music to Die For" | Bill Anderson | Dusty Hughes | 2 March 2008 (2008-3-2) | 8.50 |
| Whilst investigating the murder of R.G. Cole, an elderly gay lecturer who was found strangled at a friend's house, Lewis finds links to bare-knuckle fighting, Wagnerian opera, East Berlin, the former East German Stasi state security service and Lewis' old mentor Morse. |||||||
| 7 | "Life Born of Fire" | Richard Spence | Tom MacRae | 9 March 2008 (2008-3-9) | 8.19 |
| A student called Will McEwan shoots himself in the head in St. Mark's church, after pointing the pistol at Reverend Francis King, who is found tortured and murdered by a hot poker thrust into his head the next day. The link between both is The Garden, a pious society offering "Christian answers to youngsters' contemporary questions", and its emblem, a phoenix, to which both Will's suicide note 'On the road from Gethsemane to Calvary, I lost my way.' and a message on King's door 'Life born of fire' refer. Lewis's partner, DS James Hathaway, was a friend and classmate of Will's at both school and Cambridge. Will's father Henry McEwan apparently repudiates Will upon discovering his son's homosexuality after his death. Will's mother believed he was going steady with a nice girl. Lewis keeps searching through these circles, discovering more secrets and deceit. More blood is to be spilled, and the meanings of names proves crucial. |||||||
| 8 | "The Great and the Good" | Stuart Orme | Paul Rutman | 16 March 2008 (2008-3-16) | 8.70 |
| Following a squash injury, Robbie ends up in casualty where he meets the Donnelly family, whose school-girl daughter Beatrice had been drugged and then woke up in a field, discovering that she had been raped. Evidence points to Oswald Cooper, who worked at her school and whose prescription drug matches the doping agent. However he has an alibi, a dinner party he hosted for three former student friends, now all eminent men: Gavin Matthews, a controversial radio personality; Danny Adebayou, a city developer; and Simon Ashton, a British diplomat. The next day Cooper is found garrotted and castrated. Forensic evidence backs the view that he raped Beatrice, and his alibi is proved to be false. A friend of Cooper's who is blackmailing the three guests is also garroted. It is clear that Cooper serviced his former friends by organizing scams and deceptions for them. However, the solution to the case reveals that Cooper's murderer is protecting and preserving a far more personal secret. Jason Watkins and Kwame Kwei-Armah also appear. |||||||

### Series 3 (2009)

| # | Episode | Directed by | Writer | Original air date | Viewers (in millions) |
| 9 | "Allegory of Love" | Bill Anderson | David Pirie (Story), Stephen Churchett (Screenplay) | 22 March 2009 (2009-3-22) | 7.54 |
| Lewis and Hathaway discover that the bizarre murder of a Czech (actually, Bosnian) barmaid with an antique Persian mirror parallels a similar killing found in a newly published fantasy novel, by the young Oxford author Dorian Crane (Tom Mison). The life of another young woman is threatened, leading Lewis to suspect that the murdered girl is a victim of mistaken identity. The investigation becomes even more complex when Crane is murdered with a sword at a university function. Part of Series 2 in the U.S. Art Malik, James Fox, and Olly Alexander also appear. |||||||
| 10 | "The Quality of Mercy" | Bille Eltringham | Alan Plater | 29 March 2009 (2009-3-29) | 7.19 |
| A preview performance of a student production of The Merchant of Venice is cut short when the actor playing Shylock is stabbed to death with a prop knife. Lewis and Hathaway are working their way through a lengthy list of suspects when an ambitious journalist and friend of the cast (Shereen Martineau) is also killed. It turns out that a female professor (Maureen Beattie), whose ornate turreted house is a residence for her student actors, committed the murders to protect her career. Her reputation was threatened because she has connived in plagiarism by awarding a doctorate to the play’s director (Daisy Lewis) for a thesis that was actually written by the student's then-boyfriend (Bryan Dick). The student doesn’t care about the plagiarism because her only ambition is to work in the theatre, and the ex-boyfriend, who dropped out of Oxford, doesn’t care because he is a northern working-class lad with a chip on his shoulder who despises academia. Both murder victims were aware of the plagiarism. In parallel, a man incompetently running a hotel fraud (Ronan Vibert) in which his sister and accomplice repeatedly "steals" his suitcases from hotels turns out to be the hit-and-run driver who killed Lewis' wife Val. Lewis and Hathaway attend the driver's trial at which he pleads guilty to manslaughter. Part of Series 2 in the U.S. Gwilym Lee guest stars in this episode. |||||||
| 11 | "The Point of Vanishing" | Maurice Phillips | Paul Rutman | 5 April 2009 (2009-4-5) | 6.83 |
| Lewis and Hathaway investigate the murder of a man found beaten and drowned in his bath. The deceased is identified as a religious fanatic who once attempted to murder a celebrated atheist, Tom Rattenbury (Julian Wadham), but instead disabled Rattenbury's daughter. Investigations reveal that the deceased is another man entirely, the two having chosen to swap identities. Part of Series 2 in the U.S. |||||||
| 12 | "Counter Culture Blues" | Bill Anderson | Nick Dear (Story), Guy Andrews (Screenplay) | 12 April 2009 (2009-4-12) | 6.61 |
| Lewis, called out to deal with a noise complaint, is shocked to meet a rock star, the lead singer of iconic band Midnight Addiction (David Hayman, Anthony Higgins, Trevor Byfield), Esme Ford (Joanna Lumley), whom he had once admired, and who was believed to have drowned years ago. The body of a teenage boy, who has been repeatedly run over by a vehicle, points to a connection with members of the band. Also appearing are Simon Callow, Harry Lloyd, Daniel Kaluuya and Perdita Weeks. |||||||

### Series 4 (2010)

| # | Episode | Directed by | Writer | Original air date | Viewers (in millions) |
| 13 | "The Dead of Winter" | Bill Anderson | Russell Lewis | 2 May 2010 (2010-5-2) | 8.70 |
| With Hathaway still reeling from a particularly horrific investigation, the team investigates a murder discovered on a tour bus where none of the passengers can remember the victim. The investigation leads Lewis and Hathaway to an estate, Crevecoeur Hall, reputedly associate with treasure from the English Civil War and the ancestral home of the wealthy Mortmaignes where Hathaway grew up. The detectives are soon investigating a second murder. Part of Series 3 in the U.S. ||||||
| 14 | "Dark Matter" | Bille Eltringham | Stephen Churchett | 9 May 2010 (2010-5-9) | 8.23 |
| Lewis and Hathaway investigate the killing in suspicious circumstances of Professor Andrew Crompton, amateur astronomer and Master of Gresham College. Crompton was found dead at the university observatory after making a strange confession to a priest. His widow suspected that he had been having an affair, but Lewis and Hathaway discover that the dead man had a curious obsession. Part of Series 3 in the U.S. ||||||
| 15 | "Your Sudden Death Question" | Dan Reed | Alan Plater | 16 May 2010 (2010-5-16) | 7.29 |
| The body of a philandering primary school teacher is found floating in a fountain during a quiz weekend, an event which is hosted at Chaucer College over a bank holiday. Suspicion initially falls on two competitors with whom the dead man had been flirting, but then one of them dies in a similar way. Lewis soon finds that the first victim was involved in a secret government operation, and that several of the other quiz participants are connected to it too. Part of Series 3 in the U.S. Also appearing are Sally Bretton, Alan Davies and Timothy West. ||||||
| 16 | "Falling Darkness" | Nicholas Renton | Russell Lewis | 30 May 2010 (2010-5-30) | 7.10 |
| Stem cell researcher Ligeia Willard is murdered with a stake through her heart on Halloween; Dr Laura Hobson reveals that the victim is a former university friend of hers. More murders occur that are connected to Laura's past, and Lewis wonders whether the pathologist is holding something back. A medium, who claims to have foreseen the death, conducts a séance, but Lewis and Hathaway rely on more conventional methods to solve the murder. Part of Series 3 in the U.S. ||||||

### Series 5 (2011)

| # | Episode | Directed by | Writer | Original air date | Viewers (in millions; Includes ITV HD and ITV1+1) |
| 17 | "Old, Unhappy, Far Off Things" | Nicholas Renton | Russell Lewis | 3 April 2011 (2011-4-3) | 7.38 |
| A reunion at an all-female college ends in a murder. Professor Diana Ellerby is leaving Oxford's last surviving all-women's college. During a reunion with old students, one of them, Poppy Toynton, is murdered. Lewis and Hathaway's investigation leads them to a connected 10-year-old attack on the sister of one of the other old students during a party at the college. In that incident, the sister was attacked and is in a coma. That case has haunted Lewis and, during the investigation, he reaches out to his former DS, Ali McLennan for assistance. As the current murder investigation continues, secrets, blackmail and more bodies are uncovered. Part of Series 4 in the U.S. |||||||
| 18 | "Wild Justice" | Hettie Macdonald | Stephen Churchett | 10 April 2011 (2011-4-10) | 6.69 |
| A bishop visiting St Gerard's College is found dead after drinking poisoned wine; Lewis and Hathaway suspect that she has been killed because of her progressive views. When another two killings occur, both mirroring macabre murders from a Jacobean revenge tragedy, it appears the murderer is targeting candidates for the post of vice-regent of the college. However, after learning that one of the suspects harbors a dark secret, Lewis and Hathaway realise the motive is much more twisted and that the murderer is avenging perceived slights from more than twenty years earlier. Part of Series 4 in the U.S. |||||||
| 19 | "The Mind Has Mountains" | Charles Palmer | Patrick Harbinson | 17 April 2011 (2011-4-17) | 7.12 |
| A student dies during a residential clinical trial for a new antidepressant. An investigation by Lewis and Hathaway is hampered by the professor of psychiatry who was conducting the trial, but the pair eventually establish that the participants in the trial are acting under the malign influence of the drug. Part of Series 4 in the U.S. This episode features guest actors from rival ITV crime drama Midsomer Murders: Christina Cole, Sam Hazeldine and Lucy Liemann. |||||||
| 20 | "The Gift of Promise" | Metin Hüseyin | Dusty Hughes & Stephen Churchett | 24 April 2011 (2011-4-24) | 6.62 |
| Lewis and Hathaway investigate the murder of a businesswoman who had apparently been blackmailing the father of her protégé. The memoirs of a former head of MI5 provide Lewis with a vital clue, one which furthers the investigation's ties with old romantic passions and the Irish Republican Army (IRA). Part of Series 4 in the U.S. |||||||

### Series 6 (2012)

| # | Episode | Directed by | Writer | Original air date | Viewers (in millions; Includes ITV HD and ITV1+1) |
| 21 | "The Soul of Genius" | Brian Kelly | Rachel Bennette | 16 May 2012 (2012-5-16) | 6.94 |
| A botanist accidentally unearths the recently buried corpse of a professor who was fixated upon solving "The Hunting of the Snark", a cryptic nonsense poem by Lewis Carroll. The victim had a long-standing rivalry with his brother, giving Lewis and Hathaway an obvious suspect, but the case is hindered by the mind games of two students who seem intent on causing trouble in their quest to gain admittance to a mysterious elite club. Part of Series 5 in the U.S. |||||||
| 22 | "Generation of Vipers" | David O'Neill | Patrick Harbinson | 23 May 2012 (2012-5-23) | 6.47 |
| A professor feels humiliated when her internet dating video is leaked onto a website and watched by her students. The next morning she is found dead, the victim of what appears to be a straightforward suicide. However, Lewis is not convinced and digs deeper, identifying several suspects, including the site's founder. But as he and Hathaway get closer to the truth amid a rising death toll, they find their personal and professional lives dredged up online for all to see. Part of Series 5 in the U.S. |||||||
| 23 | "Fearful Symmetry" | Nicholas Renton | Russell Lewis | 30 May 2012 (2012-5-30) | 6.46 |
| The murder of a babysitter throws up a number of questions for Lewis and Hathaway. Was she the intended target, or was the killer aiming for her employers? Was the crime calculated or opportunistic? And why was she elaborately tied up after being murdered? Soon after the first death, a friend of the dead woman is brutally killed, which brings up a number of new questions. As the detectives dig for clues, they are led into a world of suburban swinging and fetish photography, far removed from the Oxford they know. Part of Series 5 in the U.S. |||||||
| 24 | "The Indelible Stain" | Tim Fywell | Simon Block | 6 June 2012 (2012-6-6) | 6.64 |
| When a visiting American academic delivers a controversial speech about "criminal dangerousness", many audience members are worried that his ideas could be used to target ethnic minorities. Thus when he is found hanged the next morning and Dr Hobson quickly discounts suicide, Lewis and Hathaway realise they have many suspects – from the local anti-racism activist who is first in voicing her disgust at the professor's beliefs to the women who had bombarded him with threatening emails. But then another body turns up, and the detectives find themselves pursuing even more leads. Part of Series 5 in the U.S. |||||||

### Series 7 (2013)

This series consists of three stories, each divided into two parts in the UK. In Australia, Belgium, The Netherlands, Germany and the United States, the stories were not divided, rather each shown as an entire piece. (Repeat showings in the UK, on ITV3, were similarly complete.)
| # | Episode | Directed by | Writer | Original air date | Viewers (in millions; Includes ITV1 HD and ITV1+1 later ITV HD and ITV +1) |
| 25 | "Down Among the Fearful" | Brian Kelly | Simon Block & Catherine Tregenna | 7 January 2013 (2013-1-7) 14 January 2013 (2013-1-14) | 8.21 8.09 |
| The death of psychologist Reuben Beatty throws up a number of questions when he is found murdered in the offices of psychic Randolph James. It soon becomes clear that the two were one and the same: Beatty is moonlighting as a clairvoyant. Lewis struggles to unravel his baffling double life whilst contending with Oxford's sinister psychic community. Part of Series 6 in the U.S. Shown in one piece on 16 June 2013. |||||||
| 26 | "The Ramblin' Boy" | Dan Reed | Lucy Gannon | 21 January 2013 (2013-1-21) 28 January 2013 (2013-1-28) | 7.67 8.21 |
| Chief Superintendent Jack Cornish, an ex-colleague of Robbie's, goes missing and a recently embalmed body is discovered near an isolated farm track. Lewis takes the awkward, young but bright DC Gray (Babou Ceesay) under his wing to investigate the case. It transpires that Cornish has gone to ground in a cottage in Croatia, where he manufactures crystal meth, which is smuggled into Britain inside corpses being repatriated to undertaker Brian Miller. Hathaway is conveniently on holiday in nearby Kosovo that week, helping to renovate an orphanage. Lewis relishes asking him to pop over to Split to dig him out, leading to the dialogue: "What’s the time difference?" – "About a century. You know Split is in a different country?" – "Only recently." Peter Faulkner, with whom Lewis had previously had a run-in, had murdered the other members of the gang Johnny Jay (because he objected to his son Liam being involved) and Dr. Matt Whitby, and tried to murder Liam’s girlfriend Ruth Wilson in case Liam had told her anything. Cornish walks free as there is no proof of his guilt. On the way out of the police station he asks Lewis: "A drink for old time’s sake?" "There isn’t a spoon long enough." The episode is interspersed with incidents in the culmination of Lewis and Hobson’s love affair: a longing look, her hands on his shoulders, holding hands and finally a passionate kiss in front of Innocent and Hathaway. Lewis has finally got over his wife’s death: at midpoint Hobson asks how Lewis is, and he says “Val is slipping away. I’m turning over the page.” She replies “Right!” Part of Series 6 in the U.S. Shown in one piece on 23 June 2013. |||||||
| 27 | "Intelligent Design" | Tim Fywell | Stephen Churchett (Story), Helen Jenkins (Screenplay) | 4 February 2013 (2013-2-4) 11 February 2013 (2013-2-11) | 7.58 7.90 |
| After seven years of ducking the question, Lewis and Hobson are embarking on a relationship, though the detective has a new puzzle to solve. An elderly former don, Richard Seager, is run down by his own car on the night of his release from prison, where he'd been incarcerated for killing a young woman while driving drunk. Before dying, he mysteriously scratches what looks like the number "500" into the paintwork. Lewis must contend with Seager's wife, convinced that the sister of her husband's victim is the guilty party. Part of Series 6 in the U.S. Shown in one piece on 30 June 2013. |||||||

### Series 8 (2014)

This series again consists of three stories, each divided into two parts in the UK. In Belgium and the United States, the stories were not divided, rather each is shown as an entire piece. (Repeat showings in the UK, on ITV3, were similarly complete.)
| # | Episode | Directed by | Writer | UK air date | Viewers (in millions; Includes ITV HD and ITV+1) |
| 28 | "Entry Wounds" | Nicholas Renton | Helen Jenkins | 10 October 2014 (2014-10-10) 17 October 2014 (2014-10-17) | 7.01 6.41 |
| Hathaway returns from making the Camino de Santiago pilgrimage, and he starts work on his first murder case as an inspector with the help of a new partner, DS Lizzie Maddox. As the pair delve into the worlds of neurosurgery, blood sport and animal rights, Hathaway struggles to solve the case. Unwilling to delegate responsibility to an increasingly frustrated Maddox, he is overwhelmed by the work involved, and requests help from Innocent, who persuades the now-retired Lewis to come back on a one-year contract (to the annoyance of Laura Hobson, who had hoped for a quieter life with her retired partner). A well-respected neurosurgeon has been shot, and the case becomes still more complicated when his friend and business partner, the co-owner of the hunting estate where the shooting occurred, is also murdered -- apparently with the same weapon, though it was locked away in the police evidence room after the first murder. This second murder victim had been the prime suspect for the first killing, but there's no shortage of other suspects, as the neurosurgeon turns out to have made several enemies through his work, including a complaint of malpractice for a botched operation. Part of Series 7 in the U.S. Shown in one piece on 5 October 2014. |||||||
| 29 | "The Lions of Nemea" | Nick Laughland | Tahsin Guner (Idea), Noel Farragher & Nick Hicks-Beach (Screenplay) | 24 October 2014 (2014-10-24) 31 October 2014 (2014-10-31) | 5.95 6.31 |
| Lewis, Hathaway and Maddox's abilities as a team are severely tested when they investigate the brutal stabbing of American classics scholar Rose Anderson. The bizarre case that follows takes in the cocaine trade, astrophysics and ancient drama. Anderson was killed while jogging. She had been having an affair with Felix Garwood (whose wife Philippa was her academic supervisor), an astronomy professor, but Garwood had recently dumped her. She retaliated by knocking him off his bike in her blue Mini. Garwood later meets a violent end in his office filled with antique astronomical instruments, including a telescope that had previously belonged to Isaac Newton. Meanwhile, questions arise regarding the classics professor Simon Flaxmore, who had made his name by apparently rediscovering the lost Euripides play Alcmaeon in Corinth (Ἀλκμαίων ὁ διὰ Κορίνθου, 405 BC). He is insistent that he hardly knew Rose at all and had never spoken to her, but this is considered unlikely, given that she was studying the subject on which he is the world expert. Hathaway works out that the "rediscovered" play is a fraud, as it refers to the "two lions of Nemea", whereas the constellation of Leo Minor was only so named by Johannes Hevelius in 1687. Flaxmore’s fingerprints reveal that he is Linus Cage, who was imprisoned for fraud and released in 1985. He was appointed an Oxford classics professor in 1992 on the basis of a fabricated CV. Anderson had discovered this and was planning to expose him. Felix's wife Philippa’s sister, Jennie Brightway, has a daughter Tabitha with Fanconi anaemia, whom Anderson tutored. Jennie Brightway and her husband Paul, desperate to engender a saviour sibling via in vitro fertilisation, have been struggling to find the money for this expensive procedure, but Anderson had donated a large sum to help them. Could they be connected somehow to the murders of their tutor and brother-in-law? Chemical analysis shows that the telescope used to beat Garwood to death had been wiped clean with lens wipes, which points to Paul Brightway, who is an optometrist. It was only when they undertook in vitro fertilisation that Paul Brightway discovered that Jenny Brightway and Garwood had had an affair and that Tabitha is Garwood’s biological daughter. Paul Brightway killed Garwood because he threatened to take Jennie Brightway and the children away from him. Part of Series 7 in the U.S. Shown in one piece on 12 October 2014. |||||||
| 30 | "Beyond Good and Evil" | David Drury | Noel Farragher | 7 November 2014 (2014-11-7) 14 November 2014 (2014-11-14) | 5.75 4.80 |
| Thirteen years ago, Lewis successfully apprehended hammer killer Graham Lawrie, who was convicted and sent to prison. Now Lawrie is on the verge of regaining his freedom thanks to new evidence. Lewis fears the worst, but nothing can prepare him for a string of murders resembling those in the original case. With his mentor's reputation in jeopardy, Hathaway races to catch the killer. Part of Series 7 in the U.S. Shown in one piece on 19 October 2014. |||||||

### Series 9 (2015)

The final series consists of three stories, each divided into two parts in the UK. In the United States, the stories were not divided; rather, each was shown as an entire piece.
| # | Episode | Directed by | Writer | UK air date | Viewers (in millions; Includes ITV HD and ITV+1) |
| 31 | "One For Sorrow" | Nick Laughland | Helen Jenkins | 6 October 2015 (2015-10-6) 13 October 2015 (2015-10-13) | 6.38 5.97 |
| A new boss arrives at Oxfordshire Police, and he begins to question Lewis’ role as a consultant. After an exhibition of anthropomorphic taxidermy, the body of a young avant-garde artist is found. Lewis, Hathaway and Maddox must delve into the worlds of social media, drugs, taxidermy, alternative art and the homeless East European community. Meanwhile, Hathaway confronts his father and sister, with whom he does not have good relationships. Part of Series 8 in the U.S. Shown in one piece on 7 August 2016. |||||||
| 32 | "Magnum Opus" | Matthew Evans | Chris Murray | 20 October 2015 (2015-10-20) 27 October 2015 (2015-10-27) | 5.31 5.66 |
| Lewis and Hathaway are called to investigate a body in a woodland. Realising three more murders may follow, the team must hurry to catch the killer. Hathaway is struggling to cope with his father’s illness, as he begins his search to understand his father's activities before dementia set in. Three people are murdered, all members of a spiritual cult, the "Companions of Coinherence". This group revived the ideas of Charles Williams, a member of the Inklings, an Oxford literary discussion group that also included J. R. R. Tolkien and C. S. Lewis. Williams taught that it is not only God that can forgive; we can also take another’s guilt on ourselves through the ritual of "substitution". The members of the cult bear a tattoo in the form of a triskelion as used in Gothic tracery. The murders follow the four stages of the alchemical process of the magnum opus: Negredo – black – raven – decomposition: College dean and Tolkien specialist Phil Beskin is lured into the woods on Boars Hill, knocked out, semi-buried and covered with maggots. Albedo – white – moon, purification: After undergoing the substitution ritual, Annapurna Kinneson is strangled and then tied to a post in the river so that the water can purify her Citrinitas – yellow – sun, male, enlightenment: After his assistant Gina Doran is lured out of his tattoo parlour, Jay Fennell is killed and covered in a yellow substance Rubedo – red – blood Carina Beskin, Phil Beskin’s sister, confesses that eight years ago the four – Phil and Carina Beskin, Fennell, and Kinneson – were larking about, driving home late at night without headlights, and killed Francis Fisher, a practising alchemist. Carina Beskin was driving while drunk, but the group escaped punishment because they lied. Phil Beskin and Kinneson had used the doctrine of substitution as a way of coping with their guilt. Lewis and Hathaway realize that student Sam Langton, who is in a relationship with Carina Beskin, is in reality Francis Fisher’s younger son John, who is wreaking vengeance. They track him down to a farmhouse near Burford, led there by traces of the local limestone from his shoes. They interrupt him in the process of concocting a red liquid and overpower him before he can drink it. Under Hathaway’s persuasion he tells Carina Beskin, who is dressed in red, that he forgives her. She asks what for, and he says “for murdering my father”. Suddenly she realises who he really is and berates him for killing her brother and her friends. Three ongoing plot lines also develop: (1) Laura is persuading Lewis to look forward to their trip to New Zealand; (2) Moody overcomes his doubts and agrees that Hathaway will get on fine while Lewis is away; (3) Hathaway visits his old monastery school after 17 years’ absence, and learns from Father Placid that Hathaway's father had been talking to him about how to repair the damage caused by the father's being so distant from his son. Though he had previously angered his sister Nell by leaving all the filial duties to her, Hathaway rings up his dad and asks if he can visit him. Part of Series 8 in the U.S. Shown in one piece on 14 August 2016. |||||||
| 33 | "What Lies Tangled" | David Drury | Nick Hicks-Beach | 3 November 2015 (2015-11-3) 10 November 2015 (2015-11-10) | 5.44 6.23 |
| Last ever episode. A summer’s day in Oxford is torn apart, when a parcel bomb explodes, and the team are called in to investigate. The victim is a womanizer who was known to have had numerous affairs with younger women. With his six-month trip to New Zealand with Hobson on the horizon, Lewis is in a race against time to save his career and relationship. In the end, Lewis and Hobson finally leave for New Zealand. Part of Series 8 in the U.S. Shown in one piece on 21 August 2016. |||||||