The Perfect Clue

David Manners

David Mannering

Richard 'Skeets' Gallagher

Ronnie Van Zandt

Dorothy Libaire

Mona Stewart

Betty Blythe

Ursula Chesebrough

William P. Carleton

Jerome Stewart

Ralf Harolde

Sid Barkley

Ernie Adams

Butch Carter

Robert Gleckler

Delaney

Frank Darien

Stationmaster

查尔斯·卡希尔·威尔逊

District Attorney

Jack Richardson

Simms

Pat O'Malley

Police Officer