Mr. J.G. Reeder is called in by the Bank of England to investigate a gang of forgers. Reeder enlists the aid of a younger man, Capt. Johnnie Gray, to infiltrate the gang by going undercover in Dartmoor jail.
Director: Norman Lee. AKA Mystery of Room 13.
Writers: Victor Kendall (scenario), Elizabeth Meehan (treatment), Doreen Montgomery (scenario), Edgar Wallace (novel).
Stars: Peter Murray-Hill, Sally Gray, Gibb McLaughlin, Malcolm Keen, Leslie Perrins, Sara Seegar, D.J. Williams, Rex Carvel, Robert Cochran, Philip Ray.