The Monster Vault: Threats to the Nentir Vale presents statistics, tactics, and lore for an array of new monsters that prowl the Nentir Vale, some of which trace their origins back to the earliest editions of the Dungeons & Dragons Roleplaying Game. Other entries focus on campaign villains present in the Nentir Vale region, among them the Iron Circle, the Tigerclaw Barbarians, the Raven Roost Bandits, and several new villainous groups introduced here for the first time.

A special thanks goes to Jon Schindehette, senior creative art director for this project, plus art director Mari Kolkowsky, and artists and cartographers Dave Allsop, Peter Bergting, Zoltan Boros & Gabor Szikszai, Eric Deschamps, Matt Dixon, Wayne England, Adam Gillespie, Ralph Horsley, Howard Lyon, Jim Nelson, Steve Prescott, Vincent Proce, Wayne Reynolds, Anne Stokes, Matias Tapia, Ben Wootten, Kieran Yanner.