 Townley Hotel telephone operator Kitty O Day (Jean Parker) and travel bureau clerk Johnny Jones (Peter Cookson), become involved in a murder when Kitty hears shots over the telephone. They investigate, find the body of a man and call the police. But when Inspector Clancy (Tim Ryan) and police sergeant Mike (Ralph Sanford) arrive, the body has disappeared. As Kitty and Johnny have shown up before as somewhat bothersome amateur detectives on other cases, Clancy is inclined to believe there has been no murder. Jewel robberies of the hotel safe have occurred recently, and insurance investigator Tracey (William Ruhl) has been sent to investigate. More killing occurs and finally the body of businessman Williams, the first one killed, is found again. Carla Williams (Jan Wiley), the widow, and Nick Joel (Hugh Prosser)are suspected as Carla had claimed her husband was in Chicago. Kitty suspects hotel manager Sauter (William Forrest) and goes to his room looking for clues.