The Temptation of Sarah Jane Smith ( TV story ) The Temptation of Sarah Jane Smith is the fifth serial in Series 2 of " The Sarah Jane Adventures " . It featured the return of the Trickster , and his associate Krislok , who would be liberated of his servitude to his master and make his last appearance . The episode was also notable for revealing the ultimate fate of Sarah ' s birth parents , Eddie and Barbara Smith . Synopsis . When Sarah returns a boy who has slipped through a time fissure to 1951 , she realises she has found a way to meet the parents she never knew . Is it a trap ? Sarah and Luke fall victim to a revenge plot by the Trickster . Plot . Part 1 . A boy appears through a time fissure . Sarah and Luke find the fissure as Clyde and Rani chase after the boy . They bring him back and Sarah opens the fissure so he can return home . The boy is scared , so Sarah Jane takes him through . Before she can leave , Sarah discovers it is 1951 . She pauses , then returns through the fissure . The boy asks if he completed his task and the Trickster appears , saying he did it perfectly . This time Sarah will not be able to resist temptation . Rani , Clyde and Luke try to convince Sarah to let them go through , using her travels with the Doctor as leverage , but she tells them that it is too dangerous and the Doctor knew what he was doing , mostly . She closes the fissure and they head home . At home , the kids agree that something is wrong with Sarah and set Luke to find out what . In the attic , Sarah asks Mr Smith the status of the fissure . It is inactive . She asks him for the history of Foxgrove . After he tells her , she puts Mr Smith away and looks at a black and white photograph . Luke enters and convinces Sarah to tell him the truth . She explains about her parents , their death in a car crash and how she was raised by her aunt . Luke asks why she doesn ' t go back . Sarah tells him it could be a trap . Luke notes that it could just be a coincidence , but Sarah decides not to go . That night , Sarah gets ready to go through the fissure and attempts to leave , but is caught by Luke . He asks about her clothing , then the two head out . At the fissure they discuss the dangers of crossing your own timeline . Sarah passes through and the fissure closes , but not before Luke jumps through . The fissure is still active and can be opened , so Sarah and Luke head towards the village . They are watched by Oscar , the boy they rescued . Clyde discovers Sarah ' s house empty . After failing to get either of them on their mobiles , he heads to Rani ' s house . With Gita ' s help , he gets her out of bed . On entering the house they find that it is empty and Mr Smith has no idea where they might be . He has a theory that Sarah may have gone back in time through the time portal . Mr Smith detects the box which the Verron Soothsayer gave Sarah has become active again and is glowing blue . Clyde explains what it is and suggests it will protect them with its boxy goodness . Sarah and Luke arrive in the village , where they meets her parents at a fete . The new arrivals introduce themselves as Victoria Beckham and her son David . Luke sees Oscar and follows him , but finds only a newspaper . Sarah helps out with serving tea and talks to her mother , learning more about her parents . On taking the box to the portal , neither Rani nor Clyde can find a way to use it . Then the box changes colour to red . Sarah leaves the fete as her emotions begin to get the better of her . Luke tells her that her parents ' deaths are today . He wants to go home . They argue , but Sarah disables her parents ' car engine , stopping them from being killed and changing the future . They leave the village and head for the fissure as the weather begins to turn . Clyde and Rani watch as the time portal opens and Oscar steps out . When Oscar changes into a Graske they run off . They evade it by hiding behind bins . Time starts to change . Clyde puts his arm round Rani and they experience the transition from their version of the present into a new , post - apocalyptic version . Sarah and Luke arrive back in 2009 . London has been destroyed and the Trickster reveals himself . She asks how he did this . He tells her that she did it when she stopped her parents ' deaths , and the Trickster triumphantly proclaims " You gave the world to the Trickster ! " Part 2 . Sarah demands to know how saving her parents could have altered time so drastically . The Trickster explains the village was built on a fault in time . Sarah ' s tampering with a fixed point in time opened this fault , allowing the Trickster to physically enter this reality and ravage Earth for the last half century . Sarah and Luke go back through the fissure as the Trickster gloats he has already won . Clyde and Rani explore London , ruined and reduced to rock formations , while Clyde explains that it is an alternative timeline . On the other side of the time fissure , Sarah and Luke notice the unnatural weather . They run towards the village . The fete has been moved to the village hall because of the weather . Clyde and Rani wonder how they will get home from this alternate time line , then notice a Graske . They follow him . Sarah tries to figure out how to stop the Trickster before he manifests . She tells Luke there was only one person who would immediately know how . She finds a police box and mistakes it for the Doctor ' s TARDIS before discovering a policeman inside . Having followed the Graske , Clyde and Rani discover the last surviving humans being worked as slave s . Rani finds her mum and shouts to her . The Graske hears her , but stays away , which Clyde puts down to him being scared . Despite Clyde ' s warning , Rani runs after her mother . Sarah and Luke try to find the Trickster and discover the fete has been moved to the town hall . Rani wonders how her mother still exists . Clyde tells her that time tries to compensate for changes in the timeline . When they talk to Gita , she explains they are being made to mine every resource from the Earth . Clyde asks her how the world became like this . Gita tells them of the legend of Sarah Jane Smith and how she handed the world to the Trickster when he tricked her . The Graske sets the slaves back to work . Clyde figures out that he and Rani must warn Sarah , but wonders why the Graske works for the Trickster . Sarah asks her parents if they have noticed anything strange or any new person in the village recently . While Eddie believes it to be none of their business , Barbara helps . Rani and Clyde talk to the Graske , who tells them the Trickster uses the slaves to mine minerals to create a ship so he can extend his reach to the rest of the universe . Clyde and Rani implore the Graske to help them restore the original timeline but he refuses . They note that he is simply the Trickster ' s slave . He tries to grab the puzzle box but Clyde makes him tell them the truth first . Years ago , the Graske nearly died in space , but was saved by the Trickster in return for eternal servitude . Clyde promises the Graske that if he helps them , they will give him the puzzle box to free him from the Trickster . The Graske agrees , and reopens the fissure so Rani can tell Sarah the new information . Rani passes through the fissure and goes to warn Sarah . Sarah finds an unusual reading inside an old , open - roofed building . Rani , meanwhile , enters the village hall and asks where Sarah is . She is told they were looking around the village and heads after them , soon followed by Eddie . Rani finds them and warns them that the Trickster is entering through the Abbot ' s Gateway . The Trickster appears and Eddie arrives to take Barbara away . In the village hall , Eddie and Barbara figure out that something is wrong with them when fruit rots and flower s wither at their touch . Sarah threatens to send the Trickster back with her sonic lipstick , but he tells her it is no use . Luke reminds her of the only way to save the world , to re - activate her parents ' car engine . The Trickster tries to convince her not to , but she runs off anyway . Barbara and Eddie come to realise who Sarah is and what she was trying to prevent . Sarah repairs her parents ' car when they approach her . After asking if their daughter had a good life and telling her how proud they are of her , they enter the car and drive off . The weather changes and the Trickster begins to fade . He cannot see how the timeline could have been restored . Sarah proudly states that the Trickster ' s plan never considered that her parents would willingly sacrifice themselves to save the world . The Trickster vanishes , howling in pain . Back in the modern day , the timeline is restored around the Graske and Clyde , who gives the Graske the box . The Graske teleports away , beaming over its newly returned freedom . The fissure reopens as Sarah , Luke and Rani return . Sarah Jane recloses the fissure and destroys the device which opened it . At home , Rani is joyed to find her parents alive and well and Clyde heads home . Sarah reminisces over her parents , showing Luke her only picture of them . Although she could not save them , she finally knows why they left and is incredibly proud of them . As Sarah and Luke share a hug , writing can be seen on the back of her parents ' photo , one last remnant of the notes they used to share : " Mr Smith , I need you " . Story notes . Filming locations . Llantwit Major Production errors . " to be added "