The Sarah Jane Adventures - Season 1 - Eps 9: The Lost Boy (1)
A news report on a couple looking for their missing son, Ashley, brings a surprise for Sarah Jane (Elisabeth Sladen) when she discovers that the missing boy looks exactly like Luke (Tommy Knight). And when Mr Smith (Alexander Armstrong) confirms that Luke is a genetic match with Ashley, Sarah Jane sends him back to live with his 'parents'. 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.
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: 7/10 (from 103 votes)
Language: EN
Seasons: 6
Total Episodes: 52
Network: BBC One
Genres: Action & Adventure, Drama, Sci-Fi & Fantasy, Kids
Production Companies: Unknown
Synopsis
A British science fiction television programme that was produced by BBC Cymru Wales for CBBC, created by Russell T Davies and starring Elisabeth Sladen. It was a spin-off of the long-running science fiction show Doctor Who and focused on the adventures of Sarah Jane Smith, an investigative journalist who, as a young woman had numerous adventures across time and space with the Doctor.
Cast

Elisabeth Sladen
Sarah Jane Smith

Tommy Knight
Luke Smith

Alexander Armstrong
Mr Smith (voice)

Daniel Anthony
Clyde Langer

Anjli Mohindra
Rani Chandra

Sinead Michael
Sky