
A woman suffers a seemingly accidental fall down flight of stairs, and dies from a traumatic brain injury. But after the autopsy, Hetrick suspects there is more than meets the eye. Ten years and two more mysterious deaths later, the truth is finally revealed.
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?