No Breath to Cry

From the back of the book:

With knowledge gained from a haunted monastery, the heroes of Willowshore are finally ready to take steps toward lifting the curse that's affected their hometown since the first day of summer, but now that winter has arrived, attempts to battle the supernatural forces that stand against them are complicated by the cruel realities of the year's most deadly season of all. The Season of Ghost Adventure Path continues with "No Breath to Cry," a complete adventure for 7th- to 9th-level characters.