From publisher blurb:
Level-5 D&D 5e + Shadowdark Adventure
In The Winter Museum, a strange group of quirky gnome collectors is in town looking for valiant warriors. They explain that, once a year, they bring magical trinkets to their repository north of town. This museum of arcana curiosities is located inside the tomb of the Nalen'Dor family. Alas, the magical auras of their trinkets have caused something terrible to stir inside the tomb. The undead rise from their tombs.
The gnome quartet cannot access their vault since the place is crawling with undead abominations and a strange, sentient-like spider. When the characters come to the tomb to explore what is going on, they find two apparitions. One is an ethereal, lamenting woman whose wail can stop a person's heart. The other is a towering presence, a three-headed necrophage. Its heads argue with one another. Can the characters solve this mystery?