Paul Henreid
— Hugo Bishop
Lois Maxwell
— Thelma Speight / Tasman
Kieron Moore
— Mervyn Speight
Hugh Sinclair
— Maurice Jerrard
Lloyd Lamble
— Inspector "Freddie" Frisnay
Anthony Forwood
— Rex
Bill Travers
— Victor Tasman
Mary Laura Wood
— Susie Martin
Kay Kendall
— Vera Corridge
Anna Turner
— Marjorie