Jon Guenther has penned approximately forty published books under various pseudonyms, as well as a few under his own byline. A U.S. Army veteran and former firefighter-paramedic, he was born and raised in Chicago. He presently resides in Florida. He retired from writing in 2020 to focus on his work as a computer scientist and technical architect, as well as his Miniature Schnauzer, Maggie May(hem).