The First 48

Days before Christmas in Minneapolis, Sergeants Rick Zimmerman and Tammy Diedrich are called to the murder of a young woman found strangled in a partially burned car.

In Memphis, Sergeant Bart Ragland must find out who shot and robbed a family man. Then, Detective Bill Hanson hunts two suspects who allegedly gunned down a local high school student in Tucson, AZ.

In Miami, Sgt. Louis Melancon and Det. Carlos Castellanos investigate the murders of two men savagely gunned down in the middle of a residential street. Later, detectives learn that a roommate of the two victims is missing.

In Tucson, AZ, Detectives Jennifer Whitfield and Mike Carroll are called to investigate the robbery-homicide of 27-year-old cab driver and father-to-be Timothy Royce.

When a young man is gunned down outside a Cincinnati nightclub, witnesses see another young man running from the scene. Detectives Doug Lindle and Matt Thompson hope one of their witnesses can identify the shooter and help them catch a killer on the run.

Lieutenant Toney Armstrong and his team respond to Memphis' worst mass murder in more than 15 years and find four adults and two children dead.

Detectives Keith Witherell and Bill Hilbert attempt to crack the code of silence surrounding the death of a 28-year-old man gunned down on Main Street in Cincinnati.

Det. Robert Arredondo and his team investigate the murder of a 22-year-old man tied up and shot along with two of his friends during a robbery in Dallas. Armed with only the street names of his two suspects, Arredondo races to identify them.

Dallas Detectives Scott Sayers and Ken Penrod investigate a home invasion that left a young man dead.

Sgt. Eric Freeman and the homicide team investigate the high-profile murder of a University of Memphis college football player found shot in his car near campus.

Sgt. Debo Carson and her team investigate the murder of a man shot dead outside of his house in Memphis. The case takes a turn when a man investigators believe to be a witness becomes a suspect.

Sgt. Connie Justice investigates the homicide of a man found bludgeoned to death in his Memphis apartment. With no witnesses to the crime, she must rely on the physical evidence from the victim's apartment to track down her suspect.

Sgt. Gary Diaz and Officer Kelly Mullins investigate a triple shooting in Detroit that left a young mother and her friend dead.

A grandfather is shot after answering a knock at his front door in Tucson, AZ. The suspect's getaway car crashes a few blocks from the crime scene and the suspect flees, and Bill Hanson and his team hope clues from the car will lead them to the killers.

Sergeants Bruce Folkens and Chris Karakostas work against the clock to solve the murder of an unknown homeless man, bludgeoned to death on the edge of the Mississippi riverbank in Minneapolis.

Detectives Jenny Luke and Terry McGuffey investigate the murder of a 56-year-old man brutally beaten to death in the stairwell of his apartment building in Cincinnati.

A man is found dead in a vacant lot in Dallas, and with no leads, witnesses or motive, lead Det. Rick Duggan and his team must put the pieces of the case together to find their killer.

Two teenaged boys are shot outside a nightclub in Dallas, leaving one critically wounded and the other in a coma. As Det. Eddie Ibarra puts the pieces of the case together, he is temporarily pulled to work another case.

Now that some of the strongest cases have been adjudicated, get an inside look at the powerful and dramatic events that unfolded after the arrest, up to and including the conviction.

Now that some of the strongest cases have been adjudicated, get an inside look at the powerful and dramatic events that unfolded after the arrest, up to and including the conviction.