Hell Bent ( TV story ) It was the final regular appearance of Jenna Coleman as Clara Oswald . Although Clara met her demise in " Face the Raven " , the Twelfth Doctor arranged for her to be extracted from time using Time Lord technology ; Clara would remain conscious of everything happening around her , leaving her alive but no longer affected by physical qualities such as breathing , heartbeat or even ageing . It featured the return of the Time Lord s , who were last seen in " The Day of the Doctor " , and had given the Eleventh Doctor new regeneration s off screen in " The Time of the Doctor " . Among them was Rassilon , now in a new incarnation after his previous body was last seen being attacked by in " The End of Time " . Rassilon was banished from Gallifrey , along with the High Council , after losing the allegiance of his race for his cruelty to the Doctor and his role as one of the driving forces of the Last Great Time War . He was also deposed as Lord President , with the Doctor briefly assuming it in his place . Also returning was the General , who regenerated and was revealed to be a usually - female Time Lady who had assumed a male incarnation , marking the first instance of an on - screen regeneration where a Time Lord changed genders , as well as being a rare on - screen instance of a Time Lord also changing skin colour . This episode also suggests that Time Lords are able to recognise each other , despite regeneration ; however , " Dark Water " suggests it ' s harder to tell who a Time Lord is if their gender changes via regeneration . This story reveals that Missy " didn ' t " lie back in " Death in Heaven ; " she only told a half - truth . Gallifrey was back where it was in space , but not in the same time it was when it vanished . Ohila and the Sisterhood of Karn also reappeared , wherein Ohila was hinted to have a greater personal history with the Doctor that may have gone back to his earlier days . Me , also known as Ashildr , made another appearance as well , having persisted to the final moments of time . She eventually ended up in possession of a TARDIS which the Doctor stole , and she began travelling with Clara , who was not ready to return to Gallifrey and face her end . " Hell Bent " ended up being full circle for the Doctor , where he was once again running away in his TARDIS . The story also saw the return of the sonic screwdriver , a brand new model to replace the model seen between " The Eleventh Hour " and its retirement in " The Magician ' s Apprentice " / " The Witch ' s Familiar " . This story depicted the Doctor reaching his limit , seeing him break his own moral codes , step away from being the Doctor and unleash his fury on the Time Lords in an attempt to save his companion ' s life , which came with the price of losing his memories of Clara as atonement for what he had done . Additionally , several facts about his past before fleeing Gallifrey and prophecies of the Hybrid were revealed , though who or what the Hybrid was remained uncertain . Synopsis . After being tortured for billions of years within his own confession dial , the Doctor has been pushed to the brink of madness . Returning to Gallifrey , he must face his own people , the Time Lord s , but how far will he go in his quest for vengeance ? Does he have another confession ? And how fiercely does his rage towards them for causing Clara ' s death burn ? Plot . In the Nevada desert , the Twelfth Doctor walks into a diner and is greeted by a waitress who looks and sounds exactly like Clara Oswald ( possibly another of her copies ) . Having no money , the Doctor offers to play his guitar as payment for a drink . He notices the waitress has an English accent , wondering how she got there . The waitress says it was magic , before quickly stating that she got on a plane and came here ; the Doctor smirks at her sarcasm . She asks how he got there , to which the Doctor replies was by magic . Using his sonic sunglasses to turn a radio into an amplifier , the Doctor begins playing . The waitress says she believes him . As the Doctor tunes his guitar , the waitress asks if he ' s a traveller ( due to his Scottish accent ) ; he tells her he travels " from time to time " , finishing his prep work . The Doctor plays a piece of music , and she asks him if it is a sad piece . He says that nothing is sad until it ' s over , resuming his playing . He tells her that he thinks the piece is called " Clara " . The waitress asks him to tell her about this " Clara " . . . In his past , the Doctor walks through the desert - like plains of Gallifrey , after having just sent the boy with his message ; he arrives at the old barn where he slept in as a child and worked out how to save his home . He climbs up into its loft , seeming nostalgic as he overlooks his old bed . A woman he recognises enters the barn ; with the Doctor ' s face blocked by a beam , she cannot tell who it is , so she asks him to leave . Walking closer , she meets his gaze , immediately realising his identity ; she warns the Doctor that " they " will kill him . In the chamber of the High Council , the Cloister Bell s are ringing without end , warning of great danger . Rassilon wonders if that means the Doctor has returned ; the General confirms it , radioing a guard named Gastron . Gastron has arrived via lift to the Cloisters , being advised not to approach them ; he reports that Cloister Wraith s are more active . Rassilon wonders why the Doctor hasn ' t arrived yet . Ohila enters the chamber with two guards , annoying Rassilon that the Sisterhood of Karn would arrive uninvited ; she tells him that at the end of time , one should expect the presence of immortals . Having heard that the Doctor has returned home , she came to see the resulting " fireworks " . In the meantime , the Doctor is enjoying a bowl of soup , with a small crowd of Gallifreyan s watching him in awe ; he gives a friendly smile and moves his spoon to the bowl . However , he notices ripples in the soup and the sound of an incoming craft . Gastron arrives in a military craft , asking that everyone back away ; they don ' t comply , even when he warns it ' s for their safety . Gastron orders the Doctor to drop his weapons and come peacefully . The Doctor silently walks up to the craft . Gastron explains he will take the Doctor to the chamber of the High Council . However , the Doctor instead drags his heel through the sand , drawing a line ( it ' s a warning to not come closer than that ) . He then returns to his soup , unconcerned . Watching via a monitor in the Council room , Rassilon wonders what the Doctor is up to ; Ohila retorts that he ' s finishing his soup . Taken aback by the Doctor ' s bravado , Rassilon wonders who the Doctor thinks he is ; the General states the Doctor is the man who won the Time War . The General decides they should try talking to the Doctor : words are his weapons , but when did they stop being theirs ? The Doctor rests on his old bed in the barn , and the woman comes in to inform him someone important has arrived . It ' s the General and his squad ; the Doctor simply ignores them and goes back inside . Soon after , the Doctor hears someone else has come ; he opens the door to see the High Council , who bow in respect to him . However , he simply shuts the door again . Watching , Rassilon is infuriated by the Doctor ignoring his attempts to open a dialogue , and wonders what he ' s waiting for . Ohila then goes on to explain the Doctor doesn ' t blame the Time Lords for the horrors of the Last Great Time War , just Rassilon . A third time , the woman enters the barn , seemingly scared speechless . The Doctor exits to find Rassilon , escorted by the General ' s team . Rassilon greets the Doctor , offering a handshake . The Doctor walks up , giving Rassilon a grim once - over and simply drops his confession dial in the line he drew . The Doctor coldly states " Get off my planet " , clearly sickened not only by the horrors Rassilon created in the Time War , but for the centuries he kept him trapped in the confession dial . Rassilon tries defending his actions , but the Doctor only repeats himself . Seeing he cannot win , Rassilon orders his execution ; however , the guards are hesitant . The General protests , as the Doctor is a war hero . Uncaring , Rassilon threatens them into obeying his orders by raising his gauntlet ; he turns his back to the Doctor , ordering shots to be fired . In the present , the Doctor stops his story to take a drink . The waitress notices that he loves cliffhanger s ; she wonders if this is a real story , to which the Doctor says every story he ' s ever told is real . She recaps what he ' s told her : he returned to his " home town " , a war hero and a " gang boss " who hates him tried to have him killed . Smiling , the Doctor says emphasises Rassilon " tried " . In the past , Rassilon laughs smugly ; however , his smile vanishes when he turns back around . The Doctor is perfectly fine ; all the soldiers missed him , and left a burned outline of him on the barn instead . Angered , Rassilon demands an answer from his men , but they remain silent . He grabs Gastron ' s shoulder , ordering him to tell him why they ' re all scared of an unarmed man . Gastron explains that in the Time War , the first thing that was noticed about the " Doctor of War " was that he was unarmed , and that " For many it was also the last . " Gastron throws his weapon to the ground and joins the Doctor , explaining that he served at Skull Moon with him . The rest of the firing squad follow suit . Angered , Rassilon raises his gauntlet ; he asks how many regenerations they granted him back on Trenzalore , gloating that he ' s " got all night " to kill the Doctor ' s remaining incarnations . More ships from the Capitol arrive , much to Rassilon ' s joy as it means he doesn ' t have to dirty his own hands to kill the Doctor and the traitors . However , the General states that he did not call them . Putting on his Sonic sunglasses , the Doctor states he called them ; all of Time Lord society has turned against their founder . In disbelief , Rassilon begins listing all the titles he ' s gained through helping advance the Time Lords ; he aims his gauntlet at the Doctor to kill him in petty revenge . However , the General forces his hand down , telling him " Lord President , with all respect , get off this planet . " The General then joins the Doctor ' s side . Later , a shuttle is seen leaving the top of the Capitol . On a balcony , the General then explains to the Doctor that Gallifrey came back into the universe at the extreme end of the time continuum , give or take a star system ; thus anyone banished from the planet has little choice in where to go . This was done for the safety of the Time Lords , as the fact the Doctor never confirmed that it was safe for them to return meant that Gallifrey could not be returned to the moment it disappeared . The General asks the new Lord President if he ' s gone too far , but the Doctor grimly warns that he ' s barely started ; the High Council is next to go on a shuttle . In the High Council chamber , the Doctor tosses his confession dial on the table , disgusted with what he had to go through . He tells Ohila and the General , the only other people with authority left on Gallifrey , that a confession dial is meant to purify a dying Time Lord ' s soul so they can be uploaded to the Matrix without regrets ; instead they re - purposed it to serve as a torture chamber . Ohila explains that Rassilon grew concerned about the prophecy of the Hybrid and felt that the Doctor would not willing give up the information . The Doctor sarcastically asks if they want him to protect them ; he tells them he will , but he needs more information . The General explains some Matrix prophecies foresaw the birth of a hybrid from two warrior races that will stand in the ruins of Gallifrey as it breaks millions of hearts to mend its own ; however , the Doctor detects that the General is lying . The General explains it was not some , but ALL Matrix prophecies warned them of this coming threat . The Doctor mockingly asks " what colour is is it ? " , pointing out " the problem with prophecies ; they never tell you anything important . " Ohila tells him he shouldn ' t be playing the part of the fool . The Doctor says he needs help ; he turns down the General and Ohila , saying people with bad hat s cramp his style . He needs to talk to an old friend . . . Clara ' s death by the raven is shown again ; however , right before it kills her , time freezes . Confused , she looks behind her to see the Doctor looking out from Me ' s home . She then sees a light , with the future Doctor motioning for her to come into the light . Clara complies , finding herself in a sterile room with technicians and the General . Clara asks where she is and the Doctor tells her that they ' re on Gallifrey " billions of years in the future and [ that ] the universe is pretty much over " ; she is happy the Doctor found his home . Clara hears a ringing in her ears , as the Doctor and General argue over telling her the truth . The Doctor finally relents , and explains she is frozen between two heart - beats ; the ringing was her realising that she can ' t hear her heartbeat anymore . Thus she doesn ' t have a pulse or need to breathe ( though she still does so out of habit ) . The General goes on to explain that her death is a fixed point in time ; they will return her once they find out what they can from her about the Hybrid . However , the Doctor takes the General ' s gun , threatening " on pain of death , no - one take a selfie " . Clara is shocked by his actions , wondering what happened to him since she died . The Doctor asks for a human compatible neural block . The General informs the Doctor that his weapon has no stun setting , and that there is no way he ' ll allow the Doctor to leave the room with Clara . The Doctor coldly pronounces , " I will not let Clara die , " before asking the General what regeneration he ' s on ; confirming his regeneration is the tenth ( meaning he ' s got two left ) , the General is wished good luck and shot . The Doctor takes the device and drops the gun , running off with Clara . Clara is shocked by what the Doctor has done , but he explains death on Gallifrey is basically man flu . ( Her concern is odd , as she ' s seen the Doctor cheat death . ) Gastron arrives in the extractor room , reporting the General ' s regeneration . Once the regeneration finishes , Gastron asks the General if he ' s okay ; the General gets up , revealed to now be female . Gastron quickly corrects himself , addressing the General as " ma ' am " . The General is glad to be back to normal , explaining to Gastron that her last incarnation was her only male body ; and sneeringly asks " dear god , how do you cope with all that ego ? " After getting her bearings , the General wonders where the Doctor could have run off to . Ohila enters the room , explaining that the Doctor did what he always does ; he ran straight into the most dangerous place he could think of . ( When certain death awaits whoever goes to such a place , it makes it the perfect place to hide from pursuers . ) The Doctor takes Clara to the Cloisters , an area located below Gallifrey ' s Capitol ; it is guarded by the Wraiths , which only attack if they attempt to leave . Clara wonders how long they plan to stay , prompting the Doctor to retort they also attack if you stay too long . Clara asks if he notice how fast the conversation went south ; he did . Clara asks him to explain what the Cloisters are better , so the Doctor explains that " the Time Lords have got a big computer made of ghosts , in a crypt , guarded by more ghosts " . The Wraiths are basically the firewall to keep foreign things out . Clara is confused as to why a computer would protect itself from the very people that built it ; " just wait until the Internet starts . Ooh ! That was a war ! " the Doctor retorts . Clara questions what the vines around the pillars are , which the Doctor explains ( as best as he can in human terms ) are fiber - optic cables . They trap anyone who attempts to steal information from the Matrix ; many enemies were trapped by the vines during the Cloister Wars . They are shocked to find a Dalek wrapped in the vines ; not even having enough power left to self - destruct , the Dalek begs for a mercy - killing . However , the Doctor states there is nothing they can do ; he ushers Clara on even as the Dalek continues to wail for them to kill it . They continue until Clara is surprised to find her arm being grabbed from behind by a Cyberman ; the Doctor pulls her free of its grip , explaining that these are projections from the Matrix to deter them from finding the exit . They continue , but this time are surprised by Weeping Angel s , which they mange to outmaneuver . The Doctor tells Clara that a boy once got lost in the Cloisters and was told a secret by the Wraiths that caused him to never be right in the head again . However , the boy knew where a secret maintenance hatch was . Clara asks if the boy told anyone , the Doctor tells her that the boy kept it a secret ; last anyone heard of him , the boy stole the moon and the president ' s wife . Remembering back to when Missy told her about the Doctor ' s past , Clara realises the Doctor was the boy in his story . The Doctor begins telling her about the time he spent in the confession dial ; they are observed by the General and Ohila , who decide to go after them . Clara , meanwhile , is shocked to learn that the Doctor knew that the Time Lords were responsible for her death ; he pretended to know about the Hybrid , so he could get back to Gallifrey and use their tech to resurrect her . He just " had to hang in there for a bit " . The General and Ohila arrive via lift , demanding that the Doctor come with them ( they cannot arrest them as the Wraiths would attack ) ; Clara silences them as she tries to get the Doctor to tell her how long he was trapped in his confession dial , getting no result . Wondering how long the Doctor spent inside the confession dial , Clara turns to the two and demands to know how long . Thinking a moment , Ohila says 4 . 5 billion years ; the General explains that the Doctor could have left any time he wanted , just needing to tell the Time Lords what he knew . Clara is shocked by this , realising that she meant more to him than she thought possible . Turning to the Doctor , she tearfully asks him why he ' d put himself through hell for so long , and he replies with a simple , " I had a duty of care " , and the significance of what had become a mantra for him in recent adventures is brought into sharp relief . She tells him that " people like me and you , we should say things to one another " and , taking his arm , proceeds to do so - words kept private from the audience and from the General and Ohila , to whom she refuses to divulge what she said . Clara yells at the General and Ohila with a furious tirade - " Do you know why you have to hide here at the end of time ? You are monsters ! You are hated . You . Are . Hated . Smirking , she then tells them part of what she told the Doctor ; he doesn ' t need to worry because , they will be looking at her . The Doctor has gotten through the maintenance hatch , and is heading to the repair shop to steal a TARDIS ; as one appears around her , Clara waves good - bye to them . The Doctor asks Clara what she thinks of the original design for the control rooms ; she ' s not too fond of it . Ohila demands that the Doctor face her ; seeing her face on the monitor , the Doctor opens the door and sticks his head out . Ohila points out that the Doctor has gone against everything he believes in , just to give Clara false hope ; he just shuts the door and takes off . The General wonders where the Doctor is going ; Ohila says " away " , heading to leave for Karn . Inside the TARDIS , the Doctor tells Clara that they ' ll be having lunch , then breakfast , followed by cocktail s with Moses , and then he ' ll invent a flying submarine because the fact no - one has is annoying . " Why ? Because we ' re time travellers , and that ' s how we roll ! " They break free of Gallifrey ' s time zone , which the Doctor explains is so the Time Lords can ' t track them ; he tells her to check her pulse as she now has one . However , Clara tests her pulse and tells him that she still doesn ' t have one . Slightly shocked , the Doctor states they must not have gone far enough yet , telling her that they are going straight to the very end of the universe ; with the universe so small , the damage from reviving Clara would be minimal . They arrive , just mere minutes before the universe completely dies , with the Doctor expecting his actions to have worked . However , Clara states she still doesn ' t have a pulse ; the Doctor checks himself , seeing she ' s right . He checks the back of her neck , finding the Chronolock still there . Anguished over failing to save her , again , the Doctor yells that he is no longer being accountable to anyone . To Clara ' s shock and more surprisingly , not the Doctor ' s , there are four knocks on the door to the TARDIS . Clara wonders who could be knocking when they are at the very end of time . Seemingly annoyed , the Doctor simply states " Me " and opens the door to let himself out . He exists , saying that he once told the knocker that the universe would become quite a small place when they have angered him . He asks if it has become small enough now . It ' s revealed he ' s talking to Me , who is sitting in a chair in the remains of the Cloisters ; not too far away something burns . To Me ' s surprise , the Doctor says he knew to expect immortals at the end of time . Me explains the other immortals are gone ; she ' s the last being alive , having finally earned the title Me . The Doctor notes that Me is staying alive by using a reality bubble on the Cloisters . Me tells the Doctor that she ' s been watching the stars go out , finding it beautiful . However , the Doctor tells her it ' s sad ; she counters that it ' s both . She then notes the Doctor doesn ' t like endings , comparing it to someone who doesn ' t want summer to end ; the Doctor tells her that summer can last forever , so long as you have a time machine . Me then tells him that she now sees the beauty and sorrow in Clara ' s death , angering him . The Doctor tells her to " go to Hell , which is about five minutes away . " Inside the TARDIS an impatient Clara uses the sonic sunglasses to turn on the monitor to see what the Doctor is up to , becoming shocked to see Me is still alive . She watches them , wondering what someone who has lived even longer than the Doctor has to say to him . Seeing as they have only a short time before the universe officially ends , Me asks the Doctor to finally talk about the secret of the Hybrid that the Wraiths told him about as a boy . He laughs , saying that he knows what the Hybrid is ; it ' s her , a human with Mire medical technology inside ; Me speculates it might refer to the Doctor and theorises that the Doctor might be half - human . She goes on to explain that he was a high - born Gallifreyan , yet he elects to spend all his time on Earth . He laughs at her , asking if that ' s her best idea ; he ' s the Hybrid ? Me admits that he ' s got her there , going on to explain her real theory . The Hybrid is not one person , but two true companions who will go to extremes for the sake of each other ; a powerful and compassionate Time Lord and human who serves as his guiding conscience . The Doctor denies the idea , until Me asks how he met Clara . Clara remembers that brought them together , just as the Doctor remembers . Me goes on to explain that it was another of Missy ' s plans to win back the Doctor ' s friendship ; loving chaos , she gave Clara to the Doctor , knowing he would abandon his code for the sake of saving Clara . Me laughs that she wonders what mischief the duo will get into next ; the Doctor counters they won ' t . He will use the neural block to erase Clara ' s memories of him ( as the Time Lords can track her through them ) and then drop her off somewhere to live her life . As they are friends , he will tell Clara of his intentions to wipe her memory before he does so . Me joins the Doctor entering the TARDIS , to watch his actions unfold ; Clara quickly shuts off the monitor . Once back in the TARDIS , the Doctor reintroduces the two women , with Clara unable to hide the fact she already knew Me lived till this point . Clara tells the Doctor that she was watching on the monitor and is unwilling to be the cause of him continuing to abandon his oath of being the Doctor . The Doctor tries to explain , grabbing the neural block ; however , Clara tells him that she used the sonic sunglasses to " reverse the polarity " of the neural block device to erase the Doctor ' s memory if he used it on her . The Doctor finds the idea unlikely as a neural block shouldn ' t be able to have it ' s polarity reversed . As they have reached an impasse , they decided to take a gamble as to which of their memories will be wiped ; as the neural block was programmed to wipe out Clara ' s memories of the Doctor , if it ' s used on him , his memories of Clara will be wiped . They each hold an end of the neural block , smiling at each other for the last time . After Clara suggests they forget the whole thing and just " fly away somewhere " , they press the button . As he feels fine , the Doctor assumes that Clara failed . However , the Doctor soon starts feeling drowsy ; Clara DID reverse the polarity . Clara grabs him , apologising . The Doctor tells her it ' s okay ; he broke every single rule he had . " I became the Hybrid . " As he starts losing consciousness , and therefore his memories of her , the Doctor decides to impart some final advice to his old friend , from " never be cruel or cowardly " , to the more bizarre " never eat pears " . He asks Clara for one last smile before he finally blacks out . The Doctor next awakens in the middle of a desert , with a pickup driver telling him that a Clara told him to look after the Doctor . Picking himself up , the Doctor confusedly asks the man who Clara is . The Doctor is in America , without his TARDIS and only his sonic sunglasses . Back in the present , the Doctor continues talking to Clara ; he doesn ' t remember what she looked like , or the " very important " message she gave him in the Cloisters , but remembers their adventures and half - heartedly says he is trying to look for her . Clara tries one last time to spark a memory by outright suggesting that she could be Clara , only to have the Doctor assert that he would " absolutely know " if he ever saw her again , causing Clara to turn away to hide her tears . Looking around the diner , he suddenly recalls having been to it with Amy and Rory . He tells Clara that he is currently searching for his own TARDIS , as it has disappeared from where he left it in London . As he begins once again to play the sad melody he ' d been playing , Clara smiles and reminds the Doctor what he told her about that memories become stories ; while he can ' t remember what she told him in the Cloisters , she suggests sometimes lost memories become songs . The Doctor compliments the sentiment and momentarily turns his back , as Clara walks into the back room , which is revealed to the console room for the TARDIS they stole from Gallifrey . The diner vanishes , leaving the Doctor astounded ; he then turns around to find his TARDIS , which still has Rigsy ' s graffiti memorial for her , left behind . The Doctor notices the portrait of Clara , but gives no indication whether he has connected it with the mysterious waitress . In Clara ' s TARDIS , Me , engrossed in a TARDIS Instruction Manual , tells her the chameleon circuit is broken , but Clara is unconcerned , saying that she likes it . Clara affirms that she still has no pulse and acknowledges that the universe still relies on her dying . She asks Me whether the Time Lords can return her to her place and time of death , knowing she will have to face the raven eventually , to which Me responds with the affirmative . Me asks Clara where will she go now , she replies " Gallifrey , the long way around " : she isn ' t going back to face her death just yet . The two share a smile as Clara , having been undergoing training in how to use the TARDIS for a while sets the vessel in motion through the vortex . The Doctor boards his long - abandoned TARDIS and takes off , watching a new sonic screwdriver emerge from the console and launch into the air and catching it . He then sees Clara left a message for him on the blackboard - " Run you clever boy , and be a Doctor . " As the TARDIS dematerialises , it does so without Rigsy ' s paintwork . The memorial on the front door flakes off piece by piece - any trace of Clara having been with the Doctor now gone . The Doctor ' s TARDIS is shown travelling through space , the Doctor once again setting off on a brand new adventure - unaware that Clara and Me ' s TARDIS quickly passes by his , setting off their own journeys through space and time . Home video releases . DVD releases . " to be added " Blu - ray releases . " to be added " External links . Transcript of " Hell Bent " at " Chrissie ' s Transcripts Site "