Philo Vance
Zalia Graem
Nurse Gladys Beeton
Floyd Garden
Sergeant Ernest Heath
Edgar Lowe Hammle
Major Fenwicke-Ralston
Woode Swift
District Attorney Markham
Mrs. Madge Fenwicke-Ralston
Dr. Garden
Mrs. Hammle
Inspector Colby
Dr. Doremus
Sneed, Hammle's Butler (Uncredited)
Messenger (Uncredited)
Vance's Butler (Uncredited)
Mrs. Jepson (Uncredited)
Heath's Assistant (Uncredited)
Man Yelling at Race Track (Uncredited)
Bus Driver (Uncredited)
Waiter at Race Track (Uncredited)
Servant Eating Caviar (Uncredited)
Newsboy (Uncredited)
Woman Running for Bus (Uncredited)
Traffic Cop (Uncredited)