It's 1851 in old York. Lizzy Grimm struggles to save her late father's charmingly creepy yet floundering antique shop, Grimm Curiosities. Then, during a particularly snowy December in this most haunted city in England, things turn...curiouser.

Lizzy meets Antony Carlisle, whose sister suffers from the same perplexing affliction as Lizzy's mother--both stricken silent and unresponsive after speaking with ghosts. Working closely together to fathom what power has transformed their loved ones and why, Lizzy and Antony discover an important clue: her father's treasured set of rare books on ancient folktales, enchantments, and yuletide myths. Books that a persistent collector is awfully keen to purchase. Books Lizzy can't bear to sell.

Every bewitching passage and illustration opens a doorway to something ancient and dangerously inviting. Keys to a mystery Lizzy and Antony are compelled to solve--even if doing so means unleashing one of this bright holiday's darkest myths.