From the introduction:
Old hatreds die hard, but sometimes it is necessary to set aside petty, personal disagreements for the greater good. The hag, Jeny Greenteeth, is wise and may prove instrumental in the troubles that lay ahead. Your task will not be easy, however; the dark forces of Barovia have agents everywhere, and eyes from beyond the grave no doubt watch your every move. Part Six of Misty Fortunes and Absent Hearts.
A Four-Hour adventure for 1st-4th level characters