Ray Milland is on good form in this cold war thriller. He's scientist "Fields" who is providing photography of secret formulae to his foreign paymasters. Is this voluntarily or is he being blackmailed? Well the next ninety minutes sees him illustrate quite a degree of personal conflict as he delivers more and more information to the enigmatic "Mr. Bleek" (Martin Gabel) whilst becoming increasingly disgusted with his own behaviour. He takes to heavy drinking but that isn't going to help him when one of his couriers is accidentally killed and the FBI find evidence of espionage. His paranoia is…