A mad scramble for stolen loot ensues after Boston Blackie has prisoners released for work in a wartime defence plant.
Chester Morris
as Horatio 'Boston Blackie' Black
Erik Rolf
as Dooley Watson
Jeanne Bates
as Mary Watson
Richard Lane
as Insp. John Farraday
George E. Stone
as The Runt
Lloyd Corrigan
as Arthur Manleder
Douglas Fowley
as Nails Blanton (Uncredited)
Sid Melton
as Benny Hines (Uncredited)
Ray Teal
as Policeman Joe (Uncredited)
Maude Eburne
as Edna Counihan (Uncredited)
Arthur Hunnicutt
as Elwood "Tex" Stewart (Uncredited)
Cy Kendall
as Jumbo Madigan (Uncredited)
