by Elwyn Jones
[Starring] Stratford Johns as Det. Chief Supt. Barlow, Frank Windsor as Det. Chief Insp. Watt, Norman Bowler as Det.-Sgt. Hawkins, Gilbert Wynne as Det.-Con. Dwyer, Dan Meaden as Det.-Con. Box, David Quilter as P.C. Tanner, Robert Keegan as Mr. Blackitt, John Barron as Assistant Chief Constable Gilbert