Tasked with bringing down a ruthless serial killer, FBI Agent Cadence Jones must rely on her unusual talents to crack the case. However, the Threefer Killer, who always kills in threes and taunts police with cryptic newpaper clippings, has yet to leave any forensic evidence at his crime scenes. Meanwhile, Cadence falls hard for her best friend's brother, sparking a red-hot new fling while staining relationships of old.