Dennis O'Keefe
— Lieutenant Bill Mason
Judith Anderson
— Slade
Frances E. Neal
— Ann Rogers
Mildred Coles
— Mary Jordan Powell
Eric Blore
— Mr. Hartford
Marc Lawrence
— Lefty Landers
Damian O'Flynn
— Lieutenant Onslow
Andrew Tombes
— Art Seidel, Hotel Detective
Marion Martin
— Ruby / Mary Jordan
Rand Brooks
— James 'Jimmy' Powell
Arthur Shields
— Matt Willis
Lee Bonnell
— George Atkins
Harry Burns
— Big 'Sem' Semenoff
Horace McMahon
— Mullen
Huntley Gordon
— James A. Pierce
Charles Halton
— Mr. Pinchback
Ruth Dietrich
— Pinchback's Secretary
Bert Howard
— Mr. Tuckerman
Claire McDowell
— Mrs. Tuckerman
Stanley Andrews
— Police Captain L. Andrews
Robert Middlemass
— Police Captain Lovell
Frank O'Connor
— Detective Frank
Kernan Cripps
— Joe, Police Clerk
Douglas Spencer
— Police Secretary
Dale Armstrong
— Police Radio Announcer
Joey Ray
— Mr. Barlowe
Eddie Conrad
— Room Service Waiter
Ross Forrester
— Messenger with Package
George Noisom
— Bellhop #1
Paul Le Pere
— Bellhop #2