Bastion Bay has become a bustling trade hub under the guidance of the cunning Capa Meriosa - but all is not well in the former pirate town. A monstrous undead shark stalks the seas, sinking any ship that gets too close; the newly built light house has gone mysteriously dark; and rumours swirl of twisted witches and other horrid things stalking the night. The port has been shut with no ships allowed to leave and tensions are running high. Bastion Bay is on a knife edge, and a new ship is just pulling into port... The Beast of Bastion Bay is an adventure for the 5th Edition of Dungeons & Dragons! It is designed for 3-5 5th level characters, and assumes a wide range of skills and abilities. It is designed to be played across multiple sessions and should take between 5 and 10 hours to complete. The adventure centres on the port town of Bastion Bay but can easily be transferred to any small or medium port town as long there are nearby islands and caves. This adventure was designed to have an equal balance of combat, exploration, and role-playing encounters.