Looking back tragic murders that happen every day in US, and the detectives analyse the whole picture of each case by theme.
Two cousins have a deadly fight in New Orleans, a couple in Memphis appear to vanish into thin air and a Dallas woman turns on her sister-in-law. (S2, ep 1)
Interrogations - Lies and Tells: A missing woman's boyfriend is pressed as hopes of finding her alive fade, and detectives change strategy to push a murder suspect to talk. (S2, ep 2)
Heat of the Moment: A body is found burned after a dispute with a friend, a man with cancer gets a ride home that ends in his murder and a father is killed in a jealous rage. (S2, ep 3)
Detectives rely on fingerprints to solve a father's murder, justice is delivered through DNA and ballistics is the key after a man is shot in a street fight. (S2, ep 4)
Detectives are faced with a bizarre homicide at an apartment fire. A separate case involving the murder of a preacher hinges on one single fingerprint. (S2, ep 5)
Three cases driven by revenge and resentment. A man is executed in a car park, an attempted robbery leads to murder and a gang member goes on the hunt. (S2, ep 6)
A Dallas man is enticed to an empty apartment, a murderer in Miami uses a rock to kill a homeless man, and a sister's initial good intentions turn bad. (S2, ep 7)
Fatal Friendship: Pals in New Orleans fight over money and one winds up dead, a Florida man makes a fatal mistake with new friends and a wild night in Dallas ends in tragedy. (S2, ep 8)
Case That Haunts Me: Three cases that stuck with investigators long after the arrest, from a woman being dragged to her death to a young mother found with her throat slit. (S2, ep 10)
Rookies: Rookie detectives lead their first investigations in three cases, from a convenience store killer to a Louisville love triangle. (S2, ep 11)
Explore three cases with puzzling motives, from a bizarre example of payback to a surprising gun attack by a 'friend'. (S2, ep 12)
Veteran homicide detectives show how it's done in three gripping cases, from investigating a murder in Dallas to convincing a witness to give up a shooter. (S2, ep 13)
Extraordinary cases of homicide committed in the name of love, from a couple being shot to a hearing-impaired man being stabbed in his doorway. (S2, ep 14)
Unfinished Business: A look at what happens when people become obsessed with revenge, from a fatal shooting to the betrayal of a 'friend'. (S2, ep 15)
Uncover the brutal underworld of illegal drugs, as a homeless dealer is ambushed on a dark trail and an elderly man is strangled in his apartment. (S2, ep 16)
A woman is shot just outside her home in Tulsa, while a couple is suspected of stabbing a man in his car in Charlotte. (S2, ep 17)
Investigate three cases in which homicide suspects go on the run, with gunmen bolting after a mass shooting and an escaped convict fleeing the scene of a stabbing. (S2, ep 19)
The Case That Haunts Me: Some cases stay with detectives forever. In Charlotte, two men are brutally attacked with a hammer, while a detective works his first triple homicide. (S2, ep 20)