Mallory Estate is the last place twelve-year-old Piper Peavey wants to spend her summer vacation. The grounds are always cold, the garden out back is dead, a mysterious group of children call the property home, and there's a rumor that Melena M. Mallory-the owner of the estate and Piper's wealthy grandmother-is a witch.But when Piper's father falls ill, Mallory Estate is exactly where she finds herself.The grand house and its garden hold many secrets-some of which may even save her father-and Piper will need to believe in herself, her new friends, and magic if she wants to unlock them before it's too late.