Caitlyn is looking forward to Midsummer's Eve in the enchanted English village of Tillyhenge. Celebrating the summer solstice can be fun— especially when your grandmother is a witch with a magical chocolate shop! But when a legendary love potion goes missing and a troublesome local girl becomes the victim of a fatal mishap, Caitlyn and her cousins are plunged into a puzzling mystery.

Could the death be linked to the midnight bonfires at the ancient stone circle? What about the two strangers who've just arrived in the village? With her naughty black kitten and toothless old vampire uncle (not to mention a handsome British aristocrat!) all lending a helping hand, Caitlyn sets out to do some magical sleuthing.

But Midsummer's Eve is fast approaching and spells are going disastrously wrong... can Caitlyn use her newfound witch powers to solve the mystery—and maybe even mend a broken heart?