Woman in shadow : a novel

"Darby Graham thinks she's on a much-needed vacation in remote Idaho to relax. But before she even arrives at the ranch, an earthquake strikes. Then a barn on the edge of town is engulfed in flames and strange problems at the ranch begin to escalate, and Darby finds herself immersed in a chilling mystery. More fires erupt around town, and a serial arsonist sends taunting letters to the press after each. As a forensic linguist, this is Darby's are...