From publisher blurb:
These pdfs follow a format similar to that found in the popular Behind the Spells series (also presented by Tricky Owlbear Publishing) so chances are good that, if you enjoy that series, this one will also strike your fancy. Each issue is narrated by Jadrin Nelv, monk of the Order of the Sacred Branch. Jadrin schools novice monks in the ways of the multiverse's creatures and we, the readers, get to listen in. Whether you're a player or a GM, you will find something of use within these pages.
BtM: Gargoyle includes two adventurer advantages, two new monster variants, and one new alchemical item. This offering in the series is also the first to feature a sample lair with map--let Tricky Owlbear do the work for you!