The First 48 Presents Critical Minutes

Homicide detectives attempt to solve cases involving friendships; detectives discover a woman's body in a trashcan; a domestic dispute ends in a homicide investigation; a man loses his life after agreeing to do a favor for a friend.

A woman is dragged to death in broad daylight in Memphis; a young woman's body is found with her throat slashed; two gangs in Miami engage in an ongoing feud with a rising body count that the authorities hope to curtail.

Rookie detectives lead their first investigations in three cases from The First 48 archive. In Louisville, a rookie leans on video surveillance to find a convenience store killer. In Atlanta, a new detective utilizes facial recognition software to try and solve his case. And, another young investigator tackles a love triangle in Louisville.