Edmund Lowe
— T.N. Thompson / Mr. Dynamite
Jean Dixon
— Lynn Marlo
Victor Varconi
— Jarl Dvorjak
Esther Ralston
— Charmian Dvorjak
Verna Hillie
— Mona Lewis
Minor Watson
— Clark Lewis
Robert Gleckler
— James V. King - Chief of Detectives
Jameson Thomas
— Carey Williams
Greta Meyer
— Jans
Frank Lyman
— D.H. Matthews
G. Pat Collins
— Rod
Bradley Page
— Felix
James P. Burtis
— Joe
Matt McHugh
— Sunshine