James Gleason as Police Insp. Oscar Piper

Zasu Pitts as Hildegarde Withers

Owen Davis Jr. as Robert Wilkins

Louise Latimer as Alice Stevens

Arthur Aylesworth as Kendall

Paul Fix as Joe

Richard Tucker as John Carter

Barbara Barondess as Marie

James Donlan as Jim

Agnes Anderson as Dagmar

Oscar Apfel as Robbins

Alyce Ardell as Josephine, Hildegarde's Maid (uncredited)

John T. Bambury as Midget (uncredited)

Billy Dooley as Gas Station Attendant (uncredited)

Frank Fanning as Detective Fanning (uncredited)

Mary Gordon as Woman with Bag (uncredited)

Reed Howes as Museum Guard in Egyptian Room (uncredited)

John Indrisano as Man in Line for Inspection (uncredited)

Lew Kelly as Cassidy, a Policeman (uncredited)

John Miltern as Mr. Gordon, Museum Guard (uncredited)

Tom Quinn as First Hatless Suspect (uncredited)

Bodil Rosing as Theresa the Cook (uncredited)

George Sorel as Man Threatening Carter (uncredited)