"The Book of Werewolves" is a slightly ominously-titled work from the mid 1800s by the somewhat eccentric genius Sabine Baring-Gould. It covers far more than just your typical tales of lycanthropy and delves deeply into berserker (bear-serker) lore, Hindu tradition, and cannibalism among other things, titillating the reader with rather lurid depictions of criminal behavior.