The coincidental romance in the suspense story design gives a dramatic twist to the film's plot. Mavis Marlow, a beautiful nightclub singer, was found strangled to death in her room at midnight. Bennett was seen hastily leaving Marlow's room, and thus the police focused on Bennett as the key suspect and pursued him. Bennett's wife, Catherine, and Marlow's husband, Marty, used their status as the ultimate performance duo as cover while conducting their own investigation. During the investigation, Marty developed feelings for Catherine, which unexpectedly provided a turning point in the case.