Mark Stevens as Bradford Galt

Lucille Ball as Kathleen Stewart

Clifton Webb as Hardy Cathcart

William Bendix as Stauffer, a.k.a. Fred Foss

Kurt Kreuger as Anthony Jardine

Cathy Downs as Mari Cathcart

Reed Hadley as Lt. Frank Reeves

Constance Collier as Mrs. Kingsley

Eddie Heywood as Self

Colleen Alpaugh as Little Girl with Slide Whistle (uncredited)

Charles Cane as Policeman at Tony's Apartment (uncredited)

Ellen Corby as Maid (uncredited)

Ralph Dunn as Policeman at Gallery (uncredited)

John Elliott as Laundry Proprietor (uncredited)

Mary Field as Movie Theatre Cashier (uncredited)

John Goldsworthy as Butler (uncredited)

Vincent Graeff as Newsboy Witness (uncredited)

Chuck Hamilton as Man at Hit & Run Attempt (uncredited)

Eloise Hardt as Miss Dennis, Saleswoman (uncredited)

John Kelly as Policeman at Gallery (uncredited)

Colin Kenny as Bartender (uncredited)

Molly Lamont as Lucy Wilding (uncredited)

Hope Landin as Woman Scrubbing Floor (uncredited)

Thomas Louden as Elderly Man (uncredited)

Donald MacBride as Policeman at Gallery (uncredited)

Frank Marlowe as First Cab Driver (uncredited)

Thomas Martin as Henry, the Majordomo (uncredited)

Matt McHugh as Milkman (uncredited)

Forbes Murray as Mr. Bryson (uncredited)

Steve Olsen as Arcade Barker (uncredited)

Isabel Randolph as Mrs. Reynolds (uncredited)

John Russell as Policeman at Tony's Apartment (uncredited)

Douglas Spencer as Deli Customer (uncredited)

Frieda Stoll as Frau Keller (uncredited)

Charles Tannen as Second Cab Driver (uncredited)

Minerva Urecal as Client Wife (uncredited)

Charles Wagenheim as The Real Fred Foss (uncredited)

Regina Wallace as Mrs. Bryson (uncredited)

Gisela Werbisek as Mrs. Schwartz (uncredited)

Lynn Whitney as Stenographer (uncredited)

Peter Cusanelli as Minor Role (uncredited)

Alice Fleming as Minor Role (uncredited)

Eugene Goncz as Practical Sign Painter (uncredited)

Sam Harris as Party Guest (uncredited)

Harold Miller as Party Guest (uncredited)

Tom Monroe as Policeman (uncredited)

Lee Phelps as Policeman on Street (uncredited)

Joe Ploski as Deli Customer (uncredited)

Raisa as Client Daughter (uncredited)

Pietro Sosso as Old Man (uncredited)