Générique complet
L'homme de la planète X
Robert Clarke
John Lawrence
Margaret Field
Enid Elliot
Raymond Bond
Prof. Elliot
William Schallert
Dr. Mears
RE
Roy Engel
Tommy the Constable
DO
David Ormont
Inspector Porter
GF
Gilbert Fallman
Dr. Robert Blane
PG
Pat Goldin
The Man from Planet X
TD
Tom Daly
Donal, a searcher
JJ
June Jeffery
Wife of Missing Man
