When her father goes missing, thirteen-year-old Lily Hartman must team up with a clockmaker’s son, Robert, and her mechanimal fox, Malkin, to solve the mystery of her father’s disappearance and his world-changing invention, a perpetual motion machine called the Cogheart.

It started with freaky phone calls. Now someone’s leaving the same death lilies that have been showing up in Stacy’s dreams. Everybody thinks it’s a twisted game … until another girl at school is murdered. With everyone as a potential suspect, Stacy turns to the folk magic her grandmother taught her. But will it be strong enough?