Burnt Offerings — Michael Lister

"The scratch of a single match--spark, heat, chemical reaction, fire being born--and an intense thriller begins. Terror reigns over the North Florida National Forest, the coastal town of Bayshore, and the barrier island of Pine Key; a fiery terror whose flame threatens to consume the whole world. An exacting and methodical killer whose weapon is fire is working on his masterpiece, and only a wounded and scarred FDLE agent and a retired ritual crimes expert hiding from the world in a cabin in the woods have any hope of stopping him."--From publisher's website.