Elenco - The Ringer
Herbert Lom
Maurice Meister
Donald Wolfit
Dr. Lomond
Mai Zetterling
Lisa
Greta Gynt
Cora Ann Milton
William Hartnell
Sam Hackett
Norman Wooland
Inspector Bliss
Denholm Elliott
John Lemley
Dora Bryan
Mrs. Hackett
Charles Victor
Inspector Wembury
Walter Fitzgerald
Commissioner
John Stuart
Gardener
John Slater
Bell
Edward Chapman
Stranger
Campbell Singer
Station Sergeant Carter