In June 1907, twelve-year-old Samantha looks forward to a happy summer with Nellie and her younger sisters at Grandmary's country home in the Adirondacks but a series of mysterious accidents on the property lead Samantha to suspect that someone is deliberately causing trouble.
Samantha can't wait to take Nellie to Piney Point, Grandmary's summer home in the mountains. Samantha is sure that Nellie will love the lodge as much as she does. But the girls arrive to find Piney Point plagued with accidents--and Grandmary thinking of selling. Samantha and Nellie have to figure out what's going on before they lose Piney Point forever!