An American Treasury agent teams up with a Scotland Yard inspector to track down a group of thieves that are creating artificial diamonds out of sugar.An American Treasury agent teams up with a Scotland Yard inspector to track down a group of thieves that are creating artificial diamonds out of sugar.An American Treasury agent teams up with a Scotland Yard inspector to track down a group of thieves that are creating artificial diamonds out of sugar.
Gudrun Ure
- Sgt. Smith
- (as Ann Gudrun)
Paul Hardtmuth
- Dr. Eric Miller
- (as Paul Hardmuth)
John Adams
- Policeman
- (uncredited)
Chris Adcock
- Policeman
- (uncredited)
Arnold Bell
- Police Chemist
- (uncredited)
Larry Burns
- Martin - Police Informer
- (uncredited)
Paul Carpenter
- Mickey Sweeney
- (uncredited)
Dan Cunningham
- Diamond Laboratory Technician
- (uncredited)
Frank Forsyth
- P.C. with Taxi Driver
- (uncredited)
