Dark Places of the Dominions (2016)

From publisher blurb:

Welcome back to the Dominions! This sourcebook is about the most important part of any adventure: locations.

Among these pages you will find a number of detailed, ready-to-play mysterious places of the Dread Sea Dominions, each of them ripe with interesting opportunities (and terrible dangers) for the heroes, which you can use in your campaign.
An Instant Plot is also given for each of them, a pre-made idea to use it as a no-prep, stand-alone adventure.

So grab your sword, check your bow and venture into the Dominions again!