The Fog of Old Thymes

Publisher's blurb:

After a long and adventurous sailing, the adventurers arrive at a small trade city named Carrone. What should be a busy and joyous place is instead deserted like a ghost town. It's like everyone picked up and ran away overnight. When the party goes to inspect the buildings, they find themselves trapped in a magical barrier. Not only that, but a war band of orcs are using the area to trap unsuspecting prey. And they arent the only thing waiting in the darkness.