From publisher blurb:
In generations past, the villagers of Widderspire marked the eve of the winter solstice by leaving out gifts for a fey creature named Ember John. After the Aruandans conquered the Runewild, Aldric Widderspire, the village’s new lord, became determined to end this practice. He trapped Ember John in an iron cage and sunk the fey to the bottom of Widderspire Pond. Today, the inhabitants of Widderspire commemorate Ember John’s defeat by gathering around Widderspire Pond each winter solstice to exchange gifts, drink warm cider, and skate on the pond’s frozen surface.
Though banished from the mortal realm, Ember John is still alive. Recently, one of John’s sprites, the icy-hearted Jack-o’-Frost, located John in a frozen corner of the Fey Realm. Instead of setting free his master, Jack stole John’s magical staff and proclaimed himself the “Lord of the Long, Dark Night.” Jack and the other sprites now head to Widderspire to seek vengeance against the mortals who defeated them nearly a century ago.
All Through the Long, Dark Night is an adventure for three to five 1st level characters. It is designed to be played over the course of a single session (3–4 hours of gameplay). The adventure takes place near an enchanted forest known as the Runewild and can serve as an introduction to the Runewild Campaign Setting. You can also drop the adventure into an existing campaign.
The Book Includes:
A complete adventure
Advice for scaling to higher levels
Stats for two new monsters: frost sprites and the giant ice toad
Two new magic items Ember John's sack of embers and staff of winter