The premiere of the true-crime series details the case of a young mother who was beaten and shot to death. While investigators aren't lacking for suspects, the coroner sees signs that it was a crime of passion.

When a woman is killed in her backyard, investigators focus on her family. But Graham believes this is a special kind of assassin who kills for the thrill of it. The clock is ticking; will the murderer be caught before he strikes again?

When a young, married couple is discovered in the aftermath of a house fire, firefighters fear they arrived too late. Hetrick suspects that this fire is no accident—and while he may find the truth, will justice be served?

Hetrick is facing the biggest challenge of his career: finding a connection between decades-old missing person's cases and a slew of unidentified victims. If successful, he could stop a serial killer in his tracks.

When the smoke clears from a mysterious car fire, a charred body is discovered in the backseat. Hetrick identifies the victim and in piecing together the secrets of this man's life and death, reveals atrocities no one ever imagined.