The Exham Cycle is the latest volume in Robert M. Price's long-running series of weird fiction anthologies (begun by Chaosium in 1993), each one collecting stories that inspired a major tale by H.P. Lovecraft, plus subsequent tales by other writers inspired by that Lovecraft yarn. This time the focus is on HPL's classic tale "The Rats in the Walls." An introductory essay begins the book, and each tale thereafter starts with its own mini-essay aiming...