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)

Jimmy Ames

Taxi Driver (uncredited)

Joan Barclay

Telephone Operator (uncredited)

Mary Bayless

Party Guest (uncredited)

Wilson Benge

Tom - Ward's Valet (uncredited)

Lulu Mae Bohrman

Party Guest (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)

Dan Dowling

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)