Monday 19 November
5.00-5.25pm BBC ONE
Sarah Jane and the gang face some old alien enemies again, along with an altogether unexpected foe, in the final two-part adventure of the series.
A news report on a couple looking for their missing son, Ashley, brings a surprise for Sarah Jane when she discovers that the missing boy looks exactly like Luke. And when Mr Smith, Sarah Jane's super-computer, confirms that Luke is a genetic match with Ashley, Sarah Jane sends him back to live with his "parents".
But, with no knowledge of his former life, Luke finds it hard to fit in and, when he tries to escape, he makes a startling discovery about who his parents really are.
Sarah Jane, meanwhile, makes some investigations into the Pharos Para-Science Institute – a research unit that has been conducting experiments using alien technology.
Floella Benjamin guest stars as Professor Rivers in this episode. Sarah Jane Smith is played by Elisabeth Sladen, Ashley/Luke Smith by Thomas Knight, Maria Jackson by Yasmin Paige and Clyde by Daniel Anthony.
The Lost Boy is written by Phil Ford.
The Sarah Jane Adventures – The Lost Boy Ep 10/10
Maria and her dad, Alan, dig deeper into the mystery of Luke's new parents and discover that Luke has actually been kidnapped by the Slitheen, in the final episode of the popular children's adventure series.
There are more shocks in store when Sarah Jane and Maria find out that Mr Smith, Sarah Jane's super computer, is one of the bad guys.
With Clyde nowhere to be seen, Luke in the clutches of aliens and no Mr Smith to help, things aren't looking good for Sarah Jane and Maria. But just what do the Slitheen want with Luke and who, or what, exactly, is the Xylok?
Sarah Jane Smith is played by Elisabeth Sladen, Maria Jackson by Yasmin Paige, Luke Smith by Thomas Knight, Clyde by Daniel Anthony and Alan by Joseph Millson.
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