British diamond smugglers use the radiowoman (Phyllis Kirk) from a freighter docked on the Thames to unwittingly "mule" their swag, hidden in cigarettes, past customs, not knowing that she has befriended an Inspector for the Thames River Patrol.

"Diamonds on her meant trouble!"

Credits

Guy GreenDirector

John BentleyDet. Insp. Dan Barker

Phyllis KirkJudy Roberts

Leonard WhiteDet. Sgt. Mack McLeod

Glyn HoustonCharlie Williamson