Robert Clarke
John Lawrence
Acting
Margaret Field
Enid Elliot
Acting
Raymond Bond
Prof. Elliot
Acting
William Schallert
Dr. Mears
Acting
Roy Engel
Tommy the Constable
Acting
David Ormont
Inspector Porter
Acting
Gilbert Fallman
Dr. Robert Blane
Acting
Pat Goldin
The Man from Planet X
Acting
Tom Daly
Donal, a searcher
Acting
June Jeffery
Wife of Missing Man
Acting