A massive, gang-related melee outside a nightclub leaves Gwinnett County detectives struggling to identify just who shot a young murder victim. And the death of one of the witnesses makes that challenge even harder for prosecutors.

When a Mobile mother of four is shot just blocks from her home, detectives look to her loved ones to identify her killer. But, at trial, his attorneys claim he acted in self-defense.

In Mobile, a professor is murdered in his own home. It takes a missing gaming console, and a strategic game of cat and mouse with the suspects, for detectives and prosecutors to get justice.

When three people are gunned down in a Tulsa home, detectives face two suspects, and a web of lies. Prosecutors are left with circumstantial evidence to clinch the case against a calculated, cold-blooded killer

When a transient man is gunned downed, the only eyewitness Mobile detectives have is also a suspect. At trial, reluctant witnesses, defendants pointing fingers at each other, and a surprise ruling from the judge leave a novice prosecutor struggling to clinch his case.

In Gwinnett County, a beloved rapper is gunned down in a hail of bullets from a drive-by shooting. With little hard evidence, detectives and prosecutors need to rely on a tipster to testify--despite the risks--and bring the suspect to justice.

Tulsa homicide delves into a dark world of drugs and prostitution to solve the murder of a man executed in his car in a motel parking lot.

A man shoots four people in broad daylight, leaving Tulsa detectives, attorneys, and everyone impacted struggling to explain his mental state. His case hangs on the question, and on the heated reaction of the victims' families to the course of justice.

In Tulsa, a party becomes the scene of a murder. For investigators and prosecutors, the case is riding on two accomplices betraying their friends, despite the risks.

Tulsa detectives investigate how a young rapper was found shot dead on the street of an affluent suburban neighborhood. At trial, the defense accuses the prosecution's key eyewitness of pulling the trigger.