Just out of jail and vowing to go straight, former jewel thief Boston Blackie, undertakes the reformation of a pretty blonde who has stolen a necklace from a cabaret dancer. He learns that the jewel belongs to the mother of the blonde girl, and the blonde's philandering father gave it as a gift to the cabaret girl. Now, Blackie must find a way to return the necklace to the owner's safe without arousing the suspicions of the girl's family.
Strongheart
Strongheart the Dog
Bob Custer
Boston Blackie
Corliss Palmer
Sylvia Markham
Rosemary Cooper
Necklace Nellie
Coit Albertson
Denver Dan
William Worthington
John Markham
Florence Wix
Mrs. John Markham
J.P. Lockney
Rob Nichols
Violet Palmer
Annette
