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)