Someone on board the good ship Sea Lion is a thief—and perhaps a murderer. On their way to Absalom to deliver a priceless and dangerous artifact to the Pathfinder Society, Count Varian Jeggare and his hellspawn bodyguard Radovan are robbed, the artifact stolen. With the ship far out to sea, the culprit is clearly one of their eclectic fellow passengers. But can the two experienced investigators decipher the mystery before they reach port—or the thief puts an end to their adventures for good? From fan favorite author Dave Gross comes a new tale of mystery on the high seas, set in the award-winning world of the Pathfinder Roleplaying Game.