Caitlyn is looking forward to Midsummer's Eve in the tiny English village of Tillyhenge. Celebrating the summer solstice can be fun - especially when your grandmother is a witch with an enchanted chocolate shop But when a teenage girl is murdered and a priceless love potion goes missing, she and her cousins are plunged into a puzzling mystery. Is the girl's death connected to the midnight bonfires at the ancient stone circle? What about...