In Phoenix, three young people are found dead in their home. In Memphis, a woman calls 911 to report a dead body laying on the front lawn of a home.

In Memphis, Sgt. Tony Mullins and his team are investigating the death of an unidentified man found naked on a porch. In Phoenix, Det. Jason Schechterle responds to the homicide of man shot outside of his truck.

Two patrol officers driving on a service road to the Black Canyon freeway find a man lying dead in the road. In Miami, detectives are investigating the death of a man found in front of a bar on a little Havana sidewalk.

In Miami, Sgt. Mo Velazquez and Detective Freddy Ponce discover an unidentified victim in the back seat of a torched rental car. The investigation takes a bizarre turn, as detectives uncover a kidnapping and robbery plot involving a crew of drug dealers.

In Memphis, a store clerk is shot during a robbery at a convenience store. In Miami, detectives are confronted with a dead victim and a wounded man at two crime scenes just blocks apart.

In Miami, when a young father-to-be is gunned down in broad daylight, detectives are sure they know who did it. In Phoenix, detectives respond to a call of a foul odor coming from an apartment.

In Las Vegas, detectives are called out on a nightmare of a case: a beautiful young woman was assaulted and murdered in her own apartment. And in Miami, detectives must track down an enormous handgun that was used to gun a man down.

In Miami, a homicide detective is faced with what appears to be the murder of an innocent tourist from Ohio. And a homeless man is brutally stabbed defending a local restaurant owner.

A brutal stabbing in Little Havana has Detective Carlos Castellanos following a trail of bloody footprints the killer left. And a young man is found gunned down in a parking lot, and a trail of blood at the scene indicates a second victim.