Blood Punch by Madellaine Paxson

6.40

Milton, a college dropout, was only supposed to cook meth for one day. Broken out of rehab by a brash young woman and her trigger-happy ("ex") boyfriend and driven to a remote cabin the woods, Milton finds himself drawn into a dangerous love triangle gone haywire. The couple's deadpan half-truths spin around Milton like a song on repeat. They seem to read him like an open book, until a mysterious message opens his eyes to his cursed existence. With unlimited ammunition, any hunting tool they could desire, and an ever-growing body count, for what did Milton really sign up?