A female agent tacks down the cause of mysterious explosions.
Karen Morley
Robert Baldwin
Eduardo Ciannelli
Katharine Alexander
Claude King
Agnes Anderson
Milly
Jon Hall
Ted Adams
Leonid Kinskey
Dennis O'Keefe
Odette Myrtil
Don Brodie
Gino Corrado
Fred Farrell
Alphonse Martell
Philip Sleeman