King Xeros of Old Azlant

Publisher blurb: Panic grips Absalom when a huge crystalline sailing vessel appears suddenly in the harbor. Identified as the King Xeros of Old Azlant, the ship presents a great opportunity for the Pathfinder Society. You and your fellow adventurers are summoned by Venture-Captain Adril Hestram and dropped aboard the King Xeros to explore it and report back. Only, what you find isn't an empty vessel, but a sinister ship with a vile intent.