William Wright

Philo Vance

Vivian Austin

Lorena Blendon Simms

Leon Belasco

Alexis Karnoff

Clara Blandick

Stella Blendon

Ramsay Ames

Virginia Berneaux

Damian O'Flynn

Larry Blendon

Frank Wilcox

George Hullman

Iris Adrian

Maggie McCarthy / Choo-Choo Divine

Ann Staunton

Helen Varney Blendon

Tim Murdock

The Policeman

Mary Scott

Mary

Wade Crosby

Choo-Choo's Bodyguard (Uncredited)

Eddie Dunn

Police Lieutenant Mullard (Uncredited)

Broderick O'Farrell

Dr. Campbell (Uncredited)

Phyllis Planchard

Agatha Cowle (Uncredited)

Cy Stevens

Greg Simms (Uncredited)

William Beaudine

Director

Howard W. Koch

Asistente de Dirección

Emmett Emerson

Asistente de Dirección

William Beaudine Jr.

Second Assistant Director

Robert Kent

Guión

S.S. Van Dine

Guión, Personajes

Robert E. Kent

Guión Adaptado

Jackson Rose

Director de Fotografía

Albert Glasser

Compositor de la Música Original

J.N.A. Hawkins

Sound Director

Percy Townsend

Sound Mixer

Irving Friedman

Music Director

Howard Welsch

Productor

Producers Releasing Corporation

Compañía de Produccion

Eunice King

Estilista

Bud Westmore

Jefe Departamento de Maquillaje

Dorothy Drake

Wardrobe Supervisor

Gene Fowler Jr.

Editor

Alfred DeGaetano

Supervising Editor

Perry Smith

Dirección Artística

Armor Marlowe

Decorados

George J. Teague

Special Effects