William Powell

Nick Charles

Myrna Loy

Nora Charles

Keenan Wynn

Clarence "Clinker" Krause

Dean Stockwell

Nick Charles Jr.

Phillip Reed

Tommy Drake

Patricia Morison

Phyllis Talbin

Leon Ames

Mitchell Talbin

Gloria Grahame

Fran Page

Jayne Meadows

Janet Thayar

Ralph Morgan

David Thayar

Bess Flowers

Jessica Thayar

Don Taylor

Buddy Hollis

Warner Anderson

Dr. Monolaw

Bruce Cowling

Phil Brant

Connie Gilchrist

Bertha

William Bishop

Al Amboy

Marie Windsor

Helen Amboy

Morris Ankrum

Inspector (uncredited)

James Burke

Policeman Callahan (uncredited)

Tom Dugan

Policeman Davis (uncredited)