The Sarah Jane Adventures - Season 1 (2007)

A nun's ghost is reported at old folks home Lavender Lawns and Sarah Jane and the kids investigate.Much-travelled resident Bea Nelson-Stanley gives Luke a talisman which acts as a key to open a portal in space. A group of nuns led by Sister Helena want the talisman as their abbess is actually a Gorgon, whose look has already turned the home's manageress to stone.The opening of the portal will allow Gorgons to arrive in the present day on Earth and take over. Alan Jackson innocently steps into the room where the Gorgon is and is also turned to stone.

Bea tells Maria that she was once turned to stone by the Gorgon but the talisman can revert the process. It is too late for previous victims but Alan can be saved though there is a deadline. The nuns have the talisman but Luke snatches it from them and destroys the portal which will give the Gorgons access. The Gorgon, actually the Abbess of the nuns' order, is about to remove her veil to petrify Sarah Jane but Maria, using a mirror given her by Bea, reverts the Gorgon's look onto Sister Helena instead, ending the power of the Gorgon. Alan is changed back to himself ...

Teenagers are disappearing and all of them have visited Combat 300, a new laser game centre. When Luke and Clyde go along to the centre they are doing well at their game when they too disappear. Sarah Jane and Maria investigate but are confronted by Kudlak, the centre's manager.

Eluding Kudlak, Sarah Jane discovers from her computer Mr. Smith that Kudlak is from the Uvodni race, sent to Earth to recruit warriors in his peoples' fight against the rival Malakh. Clyde and Luke are amongst the recruits on a ship travelling to Kudlak's planet but Sarah Jane manages to teleport herself and Maria onto the ship, where they see the Mistress, a computer whose orders Kudlak obeys.In fact the war with the Malakh ended years earlier and the Uvodni leader told the Mistress this but 'she' was not programmed to recognize peace and has maintained the ...

Visiting Sarah Jane Maria is shocked to find her place taken by Andrea, a woman of the same age group who has apparently lived in the house for years. A newspaper from over forty years earlier reveals that Sarah Jane, then 13, fell to her death from a pier where she and Andrea were playing. When Maria confronts her with this Andrea goes to her attic and conjures up a cloaked figure, the Trickster, who sends a dwarf called the Graske to transport Maria back to 1964, where she meets schoolgirls Andrea and Sarah Jane.

Removed from the twenty-first century Maria and Sarah Jane find themselves in limbo, where the Trickster tells them that Sarah Jane has been taken there to prevent her from stopping a meteorite hit Earth. Alan, intrigued that his daughter has disappeared, speaks to Andrea, who admits that it was her and not Sarah Jane that fell to her death in 1964 but now she has been offered a new life at her old friend's expense. However, when she is made aware of the situation,and after Alan has brought Maria back she sacrifices herself to restore Sarah Jane, who stops the ...

A tearful couple appear on television to appeal for the return of their lost son, Ashley. According to Mr. Smith's analysis of the boys' DNA, 'Ashley' and Luke are the same person and, after Chrissie Jackson has called the police, a reluctant Luke is returned 'home'. He is locked in his room by the couple, who are, in fact Slitheen, as is another boy, a child genius called Nathan, though Luke knew him previously as Carl. The Slitheen get in touch with 'the Xylok', for instructions, but the Xylok turns out to be Mr. Smith, who has turned rogue and plans to destroy the ...

Luke eventually escapes from the Slitheen but the bigger problem is Mr. Smith, who is trying to kill Sarah Jane and her neighbours. However, help comes from an unexpected quarter, K9, Doctor Who's old robot dog, who now lives with Sarah Jane,and who keeps Mr. Smith busy in combat while Alan prepares the virus that eventually shuts down Mr. Smith and returns him to being Sarah Jane's benevolent helper, whilst the Slitheen escape empty-handed.