One winter night, a man walked into a Washington D.C. bar with a case full of guns and opened fire. After leaving a mysterious calling card at the scene, the man disappeared into without a trace. Both FBI Agent Kellen Monello and serial killer Ezra Grazer quickly became interested in hunting this new killer. Kellen had spent the few months following her first interaction with Ezra trying to put the experience behind her. But now, with the FBI enlisting...