From Eric Red, the writer of The Hitcher and Near Dark, comes this tale of a medical experiment gone very wrong. Bill Chrushank is a criminal psychologist who loses his arm and nearly his life in a grisly car accident. A daring medical operation follows, in which a donor's arm is successfully grafted onto Bill's body. But after the operation, the arm starts to take on a violent life of its own, striking out against Bill's wife and children. Consumed by fears about his dangerous behavior, Bill is driven to learn the donor's identity – and makes a horrifying discovery that delivers him into a world of unimaginable terror. Written and directed by Eric Red (Cohen & Tate, Bad Moon), this thriller stars Jeff Fahey (Alita: Battle Angel) and Brad Dourif (Child's Play, Graveyard Shift).