After a rare gem is stolen from an exhibition at a posh hotel, Inspector Farraday decides to recruit former thief Boston Blackie to find the stone. Along with his assistant, "The Runt", Blackie focuses his investigation on the hotel manager, George Daley, and his sister, Eileen. Through disguises and ruses, Blackie and the Runt try to trick their way to discovering the thieves.
Chester Morris
Horatio 'Boston Blackie' Black
Janis Carter
Dorothy Anderson
William Wright
Paul Martens
Richard Lane
Inspector Farraday
George E. Stone
The Runt
Robert B. Williams
Matt Healy
Mark Roberts
George Daley
Dorothy Malone
Eileen Daley (Uncredited)
