The Sarah Jane Adventures - Season 1 - Eps 10: The Lost Boy (2)
Maria (Yasmine Paige) and her dad, Alan (Joseph Millson), dig deeper into the mystery of Luke's (Tommy Knight) new parents and discover that Luke has actually been kidnapped by the Slitheen. There are more shocks when Sarah Jane (Elisabeth Sladen) and Maria find out that Mr Smith (Alexander Armstrong), Sarah Jane's super computer, is one of the bad guys. With Clyde (David Anthony) nowhere to be seen, Luke in the clutches of aliens and no Mr Smith to help, things are not looking good for Sarah Jane and Maria. But just what do the Slitheen want with Luke? And who, or what, exactly, is the Xylok?
About The Sarah Jane Adventures

Title: The Sarah Jane Adventures
First Air Date: 2007-09-24
Last Air Date: 2011-10-18
Status: Ended
Rating: 7.057/10 (from 106 votes)
Language: EN
Seasons: 6
Total Episodes: 52
Network: BBC One
Genres: Action & Adventure, Drama, Sci-Fi & Fantasy, Kids
Production Companies: Unknown
Synopsis
Sarah Jane Smith is a truly remarkable woman who inhabits a world of mystery, danger and wonder; a world where aliens are commonplace and the Earth is under constant threat. A world that Maria Jackson, a seemingly ordinary girl, can only dream of – until she moves in next door. Nothing will ever be ordinary again.
Cast

Elisabeth Sladen
Sarah Jane Smith

Alexander Armstrong
Mr Smith (voice)

Daniel Anthony
Clyde Langer

Anjli Mohindra
Rani Chandra

Sinead Michael
Sky