From publisher blurb: The weather in Koryth has never been natural, and most unnatural of all is the constantly moving line of magical cold, the frost-line. The party’s ally, Large-Biter sends them out to research this phenomenon—and its link to the Nexus Gateways that brought the party here in the first place. However, even a simple research mission turns deadly as heat-hunting vampire-creatures known as necryos begin hunting the party, on the run from the bounty-hunting p’tan, the Captain. This adventure is an optional sidequest in the Chronicle of the Gatekeepers Campaign Serial, and includes: An introduction to the p’tan! A recently freed slave race with catlike features and fierce passions Statistics for the necryos, a vampiric creature that feeds on the heat of the living A new racial implant for the p’tan race, the p’tan shadow