Legacy (Anathema #2) by Nick Roberts

Derrick Stockton is in his mid-twenties, approaching three years sober, and working a stable job in Ohio. After surviving the seemingly random horrors of his childhood at the hands of a sinister neighbor, he believes he's finally moved on.

All that changes when a brutal murder occurs in his home state of West Virginia. His name is written in blood at the crime scene, and the only evidence is a blurry surveillance video offering a glimpse of the killer, one he knows to be long dead.

As the people closest to him are targeted by a mysterious figure, he works with state police to stop the growing body count. With the help of his support group, Derrick must confront the demons of his past to save his life and his sanity.