A sinister con man named Roat and two ex-convicts, Mike and Carlino, are about to meet their match. They have traced the location of a mysterious doll to the Greenwich Village apartment of Sam Hendrix and his blind wife, Susy. Sam had apparently been persuaded by a strange woman to transport the doll across the Canadian border, not knowing that sewn inside were several grams of heroin. When the woman is murdered, the situation becomes more urgent. The con man and his ex-convicts convince Susy that the police have implicated Sam in the woman's murder, and the doll, which she believes is the key to his innocence, is evidence. However, she refuses to reveal its location, and with the help of a young neighbor, figures out that she is the victim of a bizarre charade. But when Roat kills his associates, a deadly game of cat and mouse ensues between the two.