The Secret World of Alex Mack is a 25-book series with 25 released primary works first released in 1995 with contributions by Diana G. Gallagher, Ken Lipman, Cathy West, John Peel, Patricia Barnes-Svarney, Clayton Emery, Cathy East Dubowski, Cathy East Dobowski, Mel Odom, Bonnie D. Stone and 4 others.