William Powell

Steve Ireland

Myrna Loy

Susan Ireland

Gail Patrick

Isobel Kimble Grayson

Jack Carson

Ward Willoughby

Florence Bates

Mrs. Cooper

Sidney Blackmer

Lawyer George Renny

Sig Ruman

Dr. Wuthering

Vladimir Sokoloff

Dr. David Klugle

Donald MacBride

'Pinky' Grayson

Sara Haden

Miss Cecilia Landis

Kathleen Lockhart

Mrs. Bristol

Fern Emmett

Martha - Ireland's Maid

Joseph Crehan

Judge

George Meeker

Lawyer DeWest

Clarence Muse

Robert - Hat Check Man at Party

Elisha Cook Jr.

Joe (elevator operator)

Barbara Bedford

Renny's Secretary (uncredited)

Aldrich Bowker

Jimmy - the Doorman (uncredited)

Edward Hearn

Policeman (uncredited)

George Irving

Sanity Hearing Doctor (uncredited)

May McAvoy

Sanity Hearing Secretary (uncredited)

Ian Wolfe

Sanity Hearing Doctor (uncredited)

Wanda Perry

Party Guest (uncredited)

Richard Allen

Private Investigator (uncredited)

Jimmy Ames

Taxi Driver (uncredited)

Joan Barclay

Telephone Operator (uncredited)

Mary Bayless

Party Guest (uncredited)

Wilson Benge

Tom - Ward's Valet (uncredited)

Wade Boteler

Head Private Investigator (uncredited)

Ralph Brooks

Party Guest (uncredited)

Francis X. Bushman Jr.

Uniformed Sanitarium Guard (uncredited)

Naomi Childers

Party Guest (uncredited)

Ken Christy

Uniformed Sanitarium Guard (uncredited)

Oliver Cross

Party Guest (uncredited)

Sayre Dearing

Party Guest (uncredited)

Jay Eaton

Party Guest Getting Rake (uncredited)

Harry Fleischmann

Taxi Driver (uncredited)

Pat Gleason

Philadelphia Private Investigator (uncredited)

George Golden

Party Guest (uncredited)

Roy Gordon

Sanity Hearing Doctor (uncredited)

Jesse Graves

Bristol's Butler (uncredited)

George Guhl

First Taxi Driver (uncredited)

Stuart Hall

Party Guest (uncredited)

Mahlon Hamilton

Party Guest (uncredited)

Eddie Hart

Detroit Private Investigator (uncredited)

Selmer Jackson

Doctor at Susan's Apartment (uncredited)

Richard Kipling

Party Guest (uncredited)

George Lollier

Lake Placid Private Investigator (uncredited)

George Magrill

Sanitarium Guard (uncredited)

Philo McCullough

Cleveland Private Investigator (uncredited)

Charles McMurphy

Private Investigator (uncredited)

James Millican

Miami Private Investigator (uncredited)

Jack Mulhall

Court Clerk (uncredited)

Spec O'Donnell

Anniversary Singer (uncredited)

Broderick O'Farrell

Party Guest (uncredited)

Paul Palmer

Private Investigator (uncredited)

Edward Peil Sr.

Sun Valley Private Investigator (uncredited)

Lee Phelps

Uniformed Sanitarium Guard (uncredited)

James Pierce

San Francisco Private Investigator (uncredited)

Paul Power

Party Guest (uncredited)

Bert Roach

Front Desk Clerk (uncredited)

Byron Shores

Sanity Hearing Doctor (uncredited)

Larry Steers

Party Guest Whose Hat is Floating (uncredited)

Rudolf Steinboeck

Private Investigator (uncredited)

Harry Strang

Police Sgt. Payson (uncredited)

Brick Sullivan

Policeman (uncredited)

William Tannen

Sanitarium Attendant (uncredited)

Edward Van Sloan

Sanity Hearing Doctor (uncredited)

Emmett Vogan

Doctor at Susan's Apartment (uncredited)

Douglas Wood

Sanity Hearing Doctor (uncredited)