Sisters Heather and Sally Samuelson have just bought a new place of their own in lovely Lewisburg, Oregon. The real estate agent mentioned something about ghosts, but Heather and Sally are skeptical. They are soon barraged by friendly neighbors and curious guests dropping by for lunch. Their Aunt Myrtle even arrives with furniture for their new place—furniture handed down in their family for generations.

Not everything is what it seems in Lewisburg, though. The girls soon discover exotic herbs, hidden treasures, and dead bodies. There's a serial killer in their small town, but puzzle-solver Heather finds herself plunged into circumstances surrounding neighbors' deaths, a missing fortune, and a jewel thief's hidden treasure.

What's more, a puzzle left behind by the girls' deceased mother may be the key to stopping a killer. Heather can't help but be distracted by strange happenings in her own home, though, and the kooky neighbors don't help either. Will she be able to solve the murderer's game before someone else ends up dead, or will the killer get away with both murder and a family fortune?