Tim O’Mara has been teaching math and special education in the New York City public schools since 1987, 12 of them in Williamsburg, Brooklyn. Sacrifice Fly, his first novel, introduces schoolteacher/ex-cop Raymond Donne and was nominated for the 2013 Best First Novel Barry Award. Other Donne mysteries: Crooked Numbers, Dead Red, Nasty Cutter, slated for release in the U.S. January 1, 2017. His short story, "The Tip," is published in Unloaded: Crime Writers Writing Without Guns and his novella, "Smoked" is available in Triple Shot: 3 Authors, 3 Novellas. Tim O'Mara lives and teaches in Manhattan.