A wife brutally slain. A life plunged into isolation. Struggling to regain any sort of human connection, he seeks comfort in the strangers that share his train ride to work. But when they too begin to vanish, he comes to the horrific realization that a sadistic maniac is determined to kill him and everyone he cares about. 

Desperate to understand why, he descends into a twisted pit of madness and despair. The closer he gets, the higher the body count rises. How far will one man go to uncover the truth?