William Powell as Steve Ireland

Myrna Loy as Susan Ireland

Gail Patrick as Isobel Kimble Grayson

Jack Carson as Ward Willoughby

Florence Bates as Mrs. Cooper

Sidney Blackmer as Lawyer George Renny

Sig Ruman as Dr. Wuthering

Vladimir Sokoloff as Dr. David Klugle

Donald MacBride as 'Pinky' Grayson

Sara Haden as Miss Cecilia Landis

Kathleen Lockhart as Mrs. Bristol

Fern Emmett as Martha - Ireland's Maid

Joseph Crehan as Judge

George Meeker as Lawyer DeWest

Clarence Muse as Robert - Hat Check Man at Party

Elisha Cook Jr. as Joe (elevator operator)

Barbara Bedford as Renny's Secretary (uncredited)

Aldrich Bowker as Jimmy - the Doorman (uncredited)

Edward Hearn as Policeman (uncredited)

George Irving as Sanity Hearing Doctor (uncredited)

May McAvoy as Sanity Hearing Secretary (uncredited)

Ian Wolfe as Sanity Hearing Doctor (uncredited)

Wanda Perry as Party Guest (uncredited)

Jimmy Ames as Taxi Driver (uncredited)

Joan Barclay as Telephone Operator (uncredited)

Mary Bayless as Party Guest (uncredited)

Wilson Benge as Tom - Ward's Valet (uncredited)

Lulu Mae Bohrman as Party Guest (uncredited)

Wade Boteler as Head Private Investigator (uncredited)

Ralph Brooks as Party Guest (uncredited)

Francis X. Bushman Jr. as Uniformed Sanitarium Guard (uncredited)

Naomi Childers as Party Guest (uncredited)

Ken Christy as Uniformed Sanitarium Guard (uncredited)

Oliver Cross as Party Guest (uncredited)

Sayre Dearing as Party Guest (uncredited)

Dan Dowling as Party Guest (uncredited)

Jay Eaton as Party Guest Getting Rake (uncredited)

Harry Fleischmann as Taxi Driver (uncredited)

Pat Gleason as Philadelphia Private Investigator (uncredited)

George Golden as Party Guest (uncredited)

Roy Gordon as Sanity Hearing Doctor (uncredited)

Jesse Graves as Bristol's Butler (uncredited)

George Guhl as First Taxi Driver (uncredited)

Stuart Hall as Party Guest (uncredited)

Mahlon Hamilton as Party Guest (uncredited)

Eddie Hart as Detroit Private Investigator (uncredited)

Selmer Jackson as Doctor at Susan's Apartment (uncredited)

Richard Kipling as Party Guest (uncredited)

William Lally as Sanitarium Guard (uncredited)

George Lollier as Lake Placid Private Investigator (uncredited)

George Magrill as Sanitarium Guard (uncredited)

Philo McCullough as Cleveland Private Investigator (uncredited)

Charles McMurphy as Private Investigator (uncredited)

James H. McNamara as Party Guest (uncredited)

James Millican as Miami Private Investigator (uncredited)

Jack Mulhall as Court Clerk (uncredited)

Spec O'Donnell as Anniversary Singer (uncredited)

Broderick O'Farrell as Party Guest (uncredited)

Paul Palmer as Private Investigator (uncredited)

Edward Peil Sr. as Sun Valley Private Investigator (uncredited)

Lee Phelps as Uniformed Sanitarium Guard (uncredited)

James Pierce as San Francisco Private Investigator (uncredited)

Paul Power as Party Guest (uncredited)

Bert Roach as Front Desk Clerk (uncredited)

Ky Robinson as Cincinnati Private Investigator (uncredited)

Byron Shores as Sanity Hearing Doctor (uncredited)

Larry Steers as Party Guest Whose Hat is Floating (uncredited)

Rudolf Steinboeck as Private Investigator (uncredited)

Harry Strang as Police Sgt. Payson (uncredited)

Brick Sullivan as Policeman (uncredited)

William Tannen as Sanitarium Attendant (uncredited)

Edward Van Sloan as Sanity Hearing Doctor (uncredited)

Emmett Vogan as Doctor at Susan's Apartment (uncredited)

Douglas Wood as Sanity Hearing Doctor (uncredited)

Catherine Price as

Richard Allen as Private Investigator (uncredited)