Director Samuel Fuller concocts a brilliant visual set-up to this gritty story: cocky pickpocket unwittingly lifts some microfilm from a woman's purse; it turns out she's a courier for the Communists, and now they are both being watched by the police. The noir formula in all its 1950s glory--before the ingredients became clichés--including waterfront locales, floozies, saxophones on the soundtrack, and one hell of a climactic fistfight. Performances by Richard Widmark and Jean Peters are right on target, and the smart, sharp script is quite colorful. Fabulous Thelma Ritter received an Oscar nomination for knockout supporting role as a "professional stoolie". Exciting, atmospheric, tough as nails. *** from ****