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