 The third of five films (Dial Red-O, Sudden Danger, Calling Homicide, Footsteps in the Night and Chain of Evidence in release order and released across a full period of two years) in which Bill Elliott played a detective lieutenant (Andy Flynn in the first one, Doyle in the others) in the Los Angeles homicide department) with all five produced by Ben Schwab but a different director on each one. Lieutenant Andy Doyle (Bill Elliott) of the Los Angeles Sheriff;s homicide department, while investigation the mysterious dynamiting death of a young policeman, discovers that the strangling-murder of Francine Norman, owner of a modeling school, is linked with the firsy killing. While questioning those connected with the school, manager Darlene Adams (Jeanne Cooper), and executives Allen Gilmore (Thomas B. Henry) and Tony Fuller (Lyle Talbot), Lt. Doyle and his aide, Detective Sergeant Mike Duncan (Don Haggerty), find there is a blackmailing "baby racket" being run in conjunction with the school. Suspicion points to construction company owner Jim Haddix (Myron Healey) who had been in love with Francine. All evidence of the baby extortion racket is destroyed by an explosion, and the hunt narrows down to one man, the school handyman.