Ellery Queen's Penthouse Mystery

Ralph Bellamy

Ellery Queen

Margaret Lindsay

Nikki Porter

Charley Grapewin

Insp. Queen

Noel Madison

Gordon Cobb

Ann Doran

Sheila Cobb

James Burke

Sgt. Velie

Anna May Wong

Lois Ling

Eduardo Ciannelli

Count Brett (as Edward Ciannelli)

Frank Albertson

Sanders

Charles Lane

Doc Prouty

Russell Hicks

Harry Walsh

Tom Dugan

McGrath

Mantan Moreland

Roy

Theodore von Eltz

Jim Ritter

Eric Taylor

Screenplay

Dwight Caldwell

Editor

James S. Brown Jr.

Director of Photography

James P. Hogan

Director

Frederic Dannay

Writer

Manfred Lee

Writer

Lee Zahler

Original Music Composer

Larry Darmour

Producer