While watching for a planet that may collide with earth, scientists stationed in Scotland are approached by a visitor from outer space.
Robert Clarke
as John Lawrence
Margaret Field
as Enid Elliot
Raymond Bond
as Prof. Elliot
William Schallert
as Dr. Mears
Roy Engel
as Tommy the Constable
David Ormont
as Inspector Porter
Gilbert Fallman
as Dr. Robert Blane
Pat Goldin
as The Man from Planet X
Tom Daly
as Donal, a searcher
June Jeffery
as Wife of Missing Man
