The Sarah Jane Adventures - Season 1 - Eps 1: Revenge of the Slitheen (1)
Maria and Luke start their new school where they pal up with another boy, Clyde. However, two of the teachers and the class genius turn out to be Slitheens in human form. They are shapeless smelly invaders from another planet whose aim is to destroy the Earth by turning off the Sun with the aid of a machine which Luke inadvertently helps them to start. The three teenagers are chased around the school by the Slitheen family.
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