Harpies are cruel and vicious monsters that delight in the suffering of others. They elevate selfishness and narcissism to new heights in their constant drive to establish superiority over lesser species such as humans, dwarves and elves. Yet many Games Masters consider Harpies as no better than animals, unthinking brutes that can be used to challenge low and mid-level adventurers once creatures such as orcs cease to pose a threat. This fails to take into account the unique strengths and abilities of the Harpy which, when used properly, allow them to be used as opponents for even high-level characters. The Slayer's Guide to Harpies is packed with information on how to do just that.