Unnatural death by Cornwell, Patri Daniels

Chief medical examiner Dr Kay Scarpetta finds herself in a Northern Virginia wilderness examining the remains of two campers wanted by federal law enforcement. The victims have been savaged beyond recognition, and other evidence is terrifying and baffling, including a larger-than-life footprint. After the most frightening body retrievals of her career, Scarpetta must discover who would commit murders this brutal – and why.