Playing with Fire — E.A. Copen

Something is very wrong with Gideon Reed.
After a house goes up in flames and Reed attacks a member of the local werewolf pack, Judah is determined to solve the case. There's just one problem. A powerful spell is controlling her suspect, and she can't get close without getting burned.
Things get even more complicated when the evidence leads her straight to the doorstep of a fringe religious group, the Tribulation Adventists, whose leadership blocks her every move. Judah is pulled into a deadly game of cat and mouse where her friends and family are the bait. As she tugs at the edges of a complex tapestry of alliances, Judah unravels a thread, one that shakes her to her very core and makes her question everything she thought she knew about BSI.
Even armed with a new arsenal of spells, Judah may not be ready to fight what's coming.
Talk about baptism by fire.