In Tulsa, Detectives suspect a random roadside encounter when they find an unidentified cyclist gunned down in the middle of an intersection outside the airport.

When a father of three is executed on his front porch, Gwinnett County Homicide discovers that those closest to him are hiding a dark secret.

When an innocent bystander protecting a young woman is gunned down, Tulsa detectives scramble to learn who fired the fatal shots before anyone else gets hurt.

In Mobile, a street fight escalates to a shooting that leaves a man dead on his front yard. In Tulsa, a drive-by shooting claims the life of a 16-year-old girl.

A 19-year old's murder in Mobile hits home for Det. Rogers, his cousin. Meanwhile, a 31-year old mother in Tulsa is shot by an unexpected suspect.

In Atlanta, a stranger guns down a new father in a parking lot. In Gwinnett County, a man is stabbed more than 20 times when someone he trusts turns against him.

In Tulsa, a young man goes missing, and in order to find him detectives must crack a family's code of silence.

In Atlanta, after his mother reports him missing, a man is found dead, naked and shot twice in his bedroom.

In Atlanta, a woman is found dead in a garbage can, and a young man is ambushed by neighborhood bullies.

In Mobile, a 68-year-old woman goes missing after checking into a casino where she had lost millions.

In Gwinnett County, a teenager is gunned down outside a nightclub when he winds up at the center of a gang feud.

When a young man is found executed in the street and a second victim is shot nearby, Tulsa detectives scramble to track down the dangerous gunman before he kills again.

In Tulsa, a barrage of gunfire kills a man while he's sitting in his car, with his two-year-old daughter in the backseat.

In Mobile, a man who turned his life around is gunned down in cold blood. Detectives need to know if his troubled past came back to haunt him.

When a potential spree killer targets Tulsa's most vulnerable, Detective Max Ryden must stop the murderer before he kills again.

Detective Jason White continues to investigate Courtney Palmer's disappearance.

A man gunned down inside an apartment sets off a chain of events unlike anything Tulsa Homicide has ever seen in the dramatic first hour of a two-part episode.

In Tulsa, a man is murdered in front of his fiancee.

In Atlanta, a teenager is killed when he steps in front of a gunman to save his friend. And in Tulsa, a man is shot dead and left in a church parking lot.

In Harris County, a woman is found bound by the side of the road. As Sgt. James Dousay works the case, he discovers that he may be looking for a serial killer.