When Erin O'Connell gets called to a murder scene, she notices the tell-tale signs of a serial killer at work. Tempted to use her magic to solve the case, she soon realizes that the killer may be someone close to her—and no amount of magic will be enough to protect her. The Morrigan's Sister is a novella in the bestselling Behindbeyond series and serves as a fine introduction to the novels Got Luck, Got Hope, and Got Lost.