Adam-Troy Castro made his first professional sale to Spy magazine in 1987. Since then, he's published 12 books and almost 80 short stories. Among those stories are "Baby Girl Diamond" (nominated for the Bram Stoker Award) and "The Funeral March of the Marionettes" (nominated for the Hugo and Nebula Awards in 1998). "The Astronaut from Wyoming," a collaboration with Jerry Oltion, appeared in Analog and was nominated for the Hugo and Nebula Awards in 2000, before winning the Seiun (Japanese Hugo) for best translation in 2008.

His "Of A Sweet Slow Dance in the Wake of Temporary Dogs" was nominated for the 2003 Nebula. His original short story collections include Lost in Booth Nine (published by Silver Salamander Press in 1993), An Alien Darkness and A Desperate Decaying Darkness (published by Wildside Press in 2000), Vossoff and Nimmitz (2002), and Tangled Strings (2003). He is also the author of the Spider-Man novels—Time's Arrow: The Present (written in collaboration with Tom DeFalco), The Gathering of the Sinister Six, Revenge of the Sinister Six, and Secret of the Sinister Six—as well as the nonfiction My Ox Is Broken! The Andrea Cort novels include, Emissaries from the Dead, The Third Claw of God, and a third installment currently in progress, tentatively titled The Fall of the Marionettes.

Castro, who married the divine Judi on 25 December 2002, lives in Florida with his wife and four cats: Maggie, Uma Furman, Meow Farrow, and the latest acquisition, Ralphie, an orphan of 2005's hellacious hurricane season.