Killman Creek by Rachel Caine

Gwen Proctor won the battle to save her kids from her ex-husband, serial killer Melvin Royal, and his league of psychotic accomplices. But the war isn’t over. Not since Melvin broke out of prison. Not since she received a chilling text. Her refuge at Stillhouse Lake has become a trap. Gwen leaves her children in the protective custody of a fortified, well-armed neighbour. Now, with the help of Sam Cade, brother of one of Melvin’s victims, Gwen is going hunting. She’s learned how from one of the sickest killers alive… Read more.