Crazy Eights (Paperback) by James Melzer

As one of the nation's leading cryptozoologists, Emily Nite is used to investigating the strange and unusual. An expert in all things extraordinary, she's approached to lead the formation of a new team into the West Virginia wilderness to evaluate reports of a giant spider, but her quest for answers leads her to the discovery of an eight-legged monstrosity no one could have prepared for. Existing for eons beneath our earth, these aren't your garden variety spiders. They're bloodthirsty monsters that will rip apart anything-and anyone-in their path, and while a town fights to survive Emily and her team will have to do everything they can to beat back the terror before there's a new species at the top of the food chain!