Patrick Barr
Det. Insp. Alan Wembury
Alexander Knox
Dr Anthony Lomond
Wilfrid Lawson
Maurice Meister
Sonnie Hale
Samuel Cuthbert 'Sam' Hackett
Louise Henry
Cora Ann Milton
John Longden
Inspector Bliss
Patricia Roc
Mary Lenley
Peter Croft
John Lenley
Arthur Hambling
Det. Sgt. Richards
George Merritt
Police Station Sergeant
John Turnbull
Prison Governor
Charles Eaton
Col. Walford
Cameron Hall
Drunken Scotsman (uncredited)