The Sarah Jane Adventures Revenge of the Slitheen: Part 1 (2007–2011) Online
- Original Title :
- Revenge of the Slitheen: Part 1
- Genre :
- TV Episode / Drama / Family / Sci-Fi
- Year :
- 2007–2011
- Directror :
- Alice Troughton
- Cast :
- Elisabeth Sladen,Yasmin Paige,Tommy Knight
- Writer :
- Gareth Roberts,Russell T. Davies
- Type :
- TV Episode
- Time :
- 27min
- Rating :
- 7.1/10
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.
| Episode complete credited cast: | |||
 | Elisabeth Sladen | - | Sarah Jane Smith |
 | Yasmin Paige | - | Maria Jackson |
 | Tommy Knight | - | Luke |
 | Daniel Anthony | - | Clyde |
 | Joseph Millson | - | Alan Jackson |
 | Juliet Cowan | - | Chrissie Jackson |
 | Alexander Armstrong | - | Mr. Smith |
 | Martyn Ellis | - | Blakeman |
 | Ian Midlane | - | Jeffrey |
| Pamela Merrick | - | Wendy |
| Imogen Bain | - | Janine |
| Anton Thompson McCormick | - | Carl |
 | Jimmy Vee | - | Carl Slitheen |
 | Paul Kasey | - | Jeffrey / Blakeman / Janine Slitheen |
The role of Janine was first offered to Debbie Chazen.
One of the Slitheen offhandedly mentions another family from Raxacoricofallopitorius called the Blathereen. They make an appearance on the show much later in Series 3.