Cast 15

1. 

   Don Terry

   Larry Kent

2. 

   Gwen Gaze

   Toni Morrell

3. 

   Walter Miller

   Carter 'The Shark' Collins

4. George Rosener

   Capt. Samuel Cuttle

5. 

   Grant Withers

   Roderick Gridley

6. 

   Hobart Bosworth

   Dr. X

7. Sandra Karina

   Nurse Zanya

8. P.J. Kelly

   Prof. Gault

9. 

   Yakima Canutt

   Dreer (Mole-Men Leader)

10. 

    William Farnum

    George Brennan Westmore (Editor)

11. 

    Joe Caits

    Saltwater Jerry [Chs.1,4-7,13-15]

12. Colin Campbell

    Hawkins (the Butler) [Chs. 1-3]

13. 

    Dave O'Brien

    Det. Jameson [Chs. 4-7]

14. 

    William Royle

    Paul Thorndyke [Ch.1]

15. 

    Warner Richmond

    Capt. Tom Stanton, alias Capt. Tom Faxton [Ch.1]

Crew 5