Mary Jo Markey is an American television and film editor. Markey has been elected to membership in the American Cinema Editors society. She is a frequent collaborator with J. J. Abrams. Markey has edited several mainstream films, including The Perks of Being a Wallflower and Mission: Impossible III. She has also worked as an editor on several television shows, such as three episodes of Felicity, Breaking News, Skin, and fourteen episodes of Alias, and was also chief editor on Lost. She worked ...