It's October in Maine, and everyone in Tinker's Cove is preparing for the annual Halloween festival. While Lucy Stone is whipping up orange-frosted cupcakes, recycling tutus for her daughters' Halloween costumes, helping her son with his pre-teen rebellion and breast-feeding her brand-new bay, an arsonist is loose in Tinker's Cove. When the latest fire claims the life of the owner of the town's oldest house, arson turns into murder. Trick-or-treat turns deadly as a little digging in all the wrong places puts Lucy too close to a shocking discovery that could send all her best-laid plans up in smoke in this wonderful Lucy Stone mystery.