Cast
William Forrest
Mason Carter
Chester Morris
Horatio 'Boston Blackie' Black
Patricia Barry
Joan Howell (as Patricia White)
George E. Stone
The Runt
Fay Baker
Margie O'Reilly, alias Sandra Doray
Sarah Selby
Claire Carter
Mary Currier
Helen Kenyon
Bess Flowers
Party guest
June Vincent
Doris Howell
Richard Lane
Insp. William R. Farraday
Frank Sully
Sgt. Matthews
Edward Norris
Igor Borio