Sergeant Joe Friday goes undercover in a high-stakes operation to infiltrate a narcotics ring and get closer to the elusive kingpin, Arthur Belmont. With a new identity, Friday navigates dangerous gangs, gains trust through bold moves, and uncovers the inner workings of a vast drug network. This tense investigation showcases the relentless pursuit of justice in the face of danger. Originally aired: January 12, 1950.

Cast:
Jack Webb, Barton Yarborough, Raymond Burr, Virginia Gregg, Harry Bartell