Edmund Lowe
Philo Vance

Virginia Bruce
Zalia Graem

Benita Hume
Nurse Gladys Beeton

Douglas Walton
Floyd Garden

Nat Pendleton
Sergeant Ernest Heath

Gene Lockhart
Edgar Lowe Hammle

H.B. Warner
Major Fenwicke-Ralston

Kent Smith
Woode Swift

Grant Mitchell
District Attorney Markham

Frieda Inescort
Mrs. Madge Fenwicke-Ralston

Henry B. Walthall
Dr. Garden

Jessie Ralph
Mrs. Hammle

Charles Trowbridge
Inspector Colby

Etienne Girardot
Dr. Doremus

William Austin
Sneed, Hammle's Butler (Uncredited)

Don Brodie
Messenger (Uncredited)

Olaf Hytten
Vance's Butler (Uncredited)

Rosalind Ivan
Mrs. Jepson (Uncredited)

Fred Kelsey
Heath's Assistant (Uncredited)

Wilbur Mack
Man Yelling at Race Track (Uncredited)

Lee Phelps
Bus Driver (Uncredited)

Matty Roubert
Newsboy (Uncredited)

Dorothy Vernon
Woman Running for Bus (Uncredited)

Duke York
Traffic Cop (Uncredited)