Donis Casey is the author of ten Alafair Tucker Mysteries, The Old Buzzard Had It Coming, Hornswoggled, The Drop Edge of Yonder, The Sky Took Him, and Crying Blood (Feb. 2011). She has twice won the Arizona Book Award for her series, and been a finalist for the Willa Award and the Oklahoma Book Award. Her first novel, The Old Buzzard Had It Coming, was named an Oklahoma Centennial Book.

While researching her own genealogy, she discovered so many ripping tales of settlers, soldiers, cowboys and Indians, murder, dastardly deeds, and general mayhem that she said to herself, "Donis, you have enough material here for ten books." The resulting historical mystery series, set in Oklahoma in the booming 1910s, features the sleuthing mother of ten children.

Donis is a former teacher, academic librarian, and entrepreneur. She was born and raised in Tulsa, Oklahoma, and now lives in Tempe, AZ, with her husband, poet Donald Koozer.