On April 27, 2001, newly minted homicide detectives Quinn and Vince are called to a crime scene in Sylvan Hills; Dexter Freeman is the sole victim of a shooting at a trap house.

David Quinn and Vince Velazquez meet with a neighboring town's police officer who asks if they will investigate his father's murder. After 28 years, the murder of Leonard Hill remained unsolved and the detectives set out to piece together this decades-old crime. Their investigation leads them to Hill's family where they unearth a shocking revelation.