Elenco - The Third Visitor
Sonia Dresdel
Steffy Millington
Guy Middleton
Inspector Mallory
Hubert Gregg
Jack Kurton
Colin Gordon
Bill Millington
Karl Stepanek
Richard Carling
Eleanor Summerfield
Vera Kurton
John Slater
James C. Oliver
Michael Martin Harvey
Hewson (as Michael Martin-Harvey)
Cyril Smith
Detective Horton