William Powell

Character: Nick Charles

Myrna Loy

Character: Nora Charles

Keenan Wynn

Character: Clarence "Clinker" Krause

Dean Stockwell

Character: Nick Charles Jr.

Phillip Reed

Character: Tommy Drake

Patricia Morison

Character: Phyllis Talbin

Leon Ames

Character: Mitchell Talbin

Gloria Grahame

Character: Fran Page

Jayne Meadows

Character: Janet Thayar

Ralph Morgan

Character: David Thayar

Bess Flowers

Character: Jessica Thayar

Don Taylor

Character: Buddy Hollis

Warner Anderson

Character: Dr. Monolaw

Bruce Cowling

Character: Phil Brant

Connie Gilchrist

Character: Bertha

Henry Nemo

Character: The Neem

William Bishop

Character: Al Amboy

Marie Windsor

Character: Helen Amboy

Morris Ankrum

Character: Inspector (uncredited)

James Burke

Character: Policeman Callahan (uncredited)

Tom Dugan

Character: Policeman Davis (uncredited)

James Flavin

Character: Policeman Reardon (uncredited)

Esther Howard

Character: Sadie (uncredited)

Clinton Sundberg

Character: Mr. Purdy (uncredited)

Asta Jr.

Character: Asta (uncredited)