In this thrilling conclusion to the Valentine murder case, Sergeants Friday and Romero follow a trail that leads them to two dangerous out-of-town gangsters - the Shaker brothers. With the help of a brave young woman willing to risk her safety to assist the police, the detectives race to prevent further bloodshed in Los Angeles. Originally aired March 30, 1950.

Cast: Jack Webb (Sgt. Joe Friday), Barton Yarborough (Officer Ben Romero)

Tags: Dragnet, LAPD, organized crime, murder investigation, true crime, 1950s, police procedural, gang violence, noir, detective work, homicide, surveillance, undercover, stakeout