Courtney Crumrin, a little girl with big powers in black magic, is faced with a dangerous challenge when her ignorant classmates dabble in the dark arts and turn a young boy into a night thing.
When Uncle Aloysius takes Courtney to Romania, they encounter a young gypsy woman who may lose her heart, or even her humanity, to a dashing violinist unless Courtney can lend assistance.
Courtney investigates a new round of horror that the Coven of Mystics, her town's most powerful witches and warlocks, blames on Skarrow, a night creature who serves the reclusive Madam Harken.