R. L. LaFevers (Robin Lorraine LaFevers) is an award-winning American children's book writer from California. She is the author of the Theodosia series and Nathaniel Fludd, Beastologist series. R. L. La Fevers grew up in Los Angeles, California and now resides on a small ranch in Southern California with her husband, two sons, dog and cat. R. L. LaFevers has had a life-long love of animals, which often make appearances in her novels, and a sensitivity to ecological responsibility best apparent in the Nathaniel Fludd books. She admits to a belief in the magical, which is also a driving element of stories such as Theodosia and the Serpents of Chaos. Grave Mercy is her first young adult book.