Πρωταγωνιστές του κύκλου 2

1. 

   Jon Pertwee

   The Doctor

2. 

   Caroline John

   Liz Shaw

Γκεστ σταρ 14

1. 

   Norman Jones

   Major Baker

2. Thomasine Heiner

   Miss Dawson

3. 

   Paul Darrow

   Captain Hawkins

4. 

   Geoffrey Palmer

   Masters

5. Dave Carter

   Old Silurian

6. Nigel John

   Young Silurian

7. Paul Barton

   Silurian

8. Simon Cain

   Silurian

9. John Churchill

   Silurian

10. Harry Swift

    Private Robins

11. 

    Pat Gorman

    Silurian Scientist

12. 

    Nicholas Courtney

    Brig. Lethbridge-Stewart

13. 

    Peter Halliday

    Silurians (voice)

14. 

    Peter Miles

    Dr. Lawrence

Συντελεστές 6