Written by Malcolm Hulke
"If you trust me, I think I can persuade the humans that you are prepared to live with them on this planet in peace"
| Episode Title | Premiere Date |
| Episode 1 | 31/01/1970 |
| Episode 2 | 07/02/1970 |
| Episode 3 | 14/02/1970 |
| Episode 4 | 21/02/1970 |
| Episode 5 | 28/02/1970 |
| Episode 6 | 07/03/1970 |
| Episode 7 | 14/03/1970 |
Exiled to Earth and now working for UNIT as their scientific advisor, the Doctor is summoned to an underground research centre at Wenley Moor to investigate a series of inexplicable power losses. Initially suspecting sabotage, he soon discovers that the nearby cave system conceals a colony of an ancient reptilian race called the Silurians. Awaking from a hibernation which has lasted millions of years, they are now intent on reclaiming the Earth from Mankind...
Cast & Crew
The Doctor: Jon Pertwee
Liz Shaw: Caroline John
Brigadier Lethbridge-Stewart: Nicholas Courtney
Dr. Quinn: Fulton Mackay
Major Baker: Norman Jones
Dr. Lawrence: Peter Miles
Miss Dawson: Thomasine Heiner
Captain Hawkins: Paul Darrow
Masters: Geoffrey Palmer
Silurians (voices): Peter Halliday
Producer: Derrick Sherwin
Director: Timothy Combe
Scriptwriter: Malcolm Hulke
