The plot revolves around a wealthy businessman who becomes entangled in a web of deceit and passion, leading to a deadly game of cat and mouse.

Private detective Johnny Wadd is hired by Jean Osborne to investigate the murder of her brother Tom. Johnny soon discovers that the culprit is a woman calling herself the Black Widow who operates an underground S & M club. Infiltrating the club, Johnny sets a trap for the evil dominatrix just in time for the police to arrive.