In the crosshairs of a killer… PI Charlie Dodge may be down, but he's most definitely not out. He's still reeling after a series of earth-shattering events, so when a desperate woman hires Dodge Investigations to find her missing sister, the head-scratcher of a case is exactly the distraction Charlie and his steadfast partner, Wyrick, need. Two days prior, Rachel Dean disappeared without a trace from her locked-from-the-inside Dallas apartment, and every possible trail has gone cold. Grappling with the fallout of her efforts to dismantle the shadowy organization Universal Theorem, Wyrick throws herself into her investigative work. Charlie knows his partner can handle herself, but when she uncovers a past connection that paints a target on her back, the threat of losing her hits Charlie hard. There's nothing he wouldn't do to keep Wyrick safe, but with the clock ticking on a victim they've yet to find, it's only a matter of time before the cold-blooded killer leads them to a deadly end.