Ever since she stumbled into the enchanted village of Tillyhenge and discovered the magical chocolate shop run by her witch grandmother, Caitlyn has been dreaming of finding her long-lost mother and finally unwrapping the mystery of her past. But meeting her mum isn't the sweet reunion she'd hoped for: Tara is nothing like the gentle, maternal figure Caitlyn had imagined—and she's also suspected of foul play over a recent death. The locals are wary and suspicious of her, and even Lord James Fitzroy seems uncertain, despite his feelings for Caitlyn.

Determined to clear the air and restore harmony, Caitlyn delves deeper into the murky concoction of magic and family secrets. She knows Tara is a powerful witch with a fierce streak, but is her mother really guilty—or is there someone else stirring the cauldron?

Meanwhile, the villagers are being spooked by superstitions and the hunt is still on for the Widow Mags's missing grimoire—a powerful "book of spells" that many would do anything to possess. And what about Nibs the mischievous kitten who seems to have vanished without a trace?

Luckily, Caitlyn still has her vampire uncle Viktor by her side (when he isn't busy searching for his missing fangs), not to mention her sassy cousin Pomona and her own budding magic powers. With Samhain Eve fast approaching, can she untangle this mystery and bring peace to Tillyhenge at last?