When police officer Jack Conley is murdered in cold blood on New Years' Eve, Joe Friday (Jack Webb) has the unenviable task of breaking the news to Conley's wife Betty (June Whitley)--just as she is preparing a big party. Making it his personal mission to track down Conley's killer, Friday pieces together the evidence and determines that the assailant was a drug addict. Future TV producer Aaron Spelling contributes a memorable cameo as a former dope pusher who has "seen the light." This episode is based on the Dragnet radio broadcast of March 8, 1951. ~ Hal Erickson, Rovi