From the back cover: A Guide to Out of the Abyss is a walkthrough designed to help dungeon masters prepare Out of the Abyss. Inside, you will find stats, summaries and guidance. This guide should help keep your prep time to a minimum. User summary: Note this is a "third-party" supplemental guide ("adventure walkthrough") to the series of adventures. The commercially published adventures themselves are not included but are required to use this guide.