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

Joseph Crehan

Judge

Clarence Muse

Robert - Hat Check Man at Party

Elisha Cook Jr.

Joe (elevator operator)

Barbara Bedford

Renny's Secretary (uncredited)

George Irving

Sanity Hearing Doctor (uncredited)

May McAvoy

Sanity Hearing Secretary (uncredited)

Ian Wolfe

Sanity Hearing Doctor (uncredited)

Wilson Benge

Tom - Ward's Valet (uncredited)

Wade Boteler

Head Private Investigator (uncredited)

Ken Christy

Uniformed Sanitarium Guard (uncredited)

Oliver Cross

Party Guest (uncredited)

Sayre Dearing

Party Guest (uncredited)

Dan Dowling

Party Guest (uncredited)

Pat Gleason

Philadelphia Private Investigator (uncredited)

Roy Gordon

Sanity Hearing Doctor (uncredited)

George Guhl

First Taxi Driver (uncredited)

Stuart Hall

Party Guest (uncredited)

Mahlon Hamilton

Party Guest (uncredited)

Selmer Jackson

Doctor at Susan's Apartment (uncredited)

Richard Kipling

Party Guest (uncredited)

George Magrill

Sanitarium Guard (uncredited)

Philo McCullough

Cleveland Private Investigator (uncredited)

James Millican

Miami Private Investigator (uncredited)

Jack Mulhall

Court Clerk (uncredited)

Edward Peil Sr.

Sun Valley Private Investigator (uncredited)

Lee Phelps

Uniformed Sanitarium Guard (uncredited)

James Pierce

San Francisco Private Investigator (uncredited)

Byron Shores

Sanity Hearing Doctor (uncredited)

Larry Steers

Party Guest Whose Hat is Floating (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)