Casts
Michael Rennie
as Lord John Roxton
Jill St. John
as Jennifer Holmes
David Hedison
as Ed Malone
Claude Rains
as Prof. George Edward Challenger
Fernando Lamas
as Manuel Gomez
Richard Haydn
as Prof. Summerlee
Ray Stricklyn
as David Holmes
Jay Novello
as Costa
Ian Wolfe
as Burton White
Colin Campbell
as Prof. Waldron (uncredited)
