Fifteen-year-old Gemma's life on a small New Brunswick island with her father, Jonah, is not an exciting one. Her mother ran off when she was an infant, and Jonah, an amateur scientist, spends most of his time conducting experiments he thinks will one day bring him fame. But when a woman arrives on the island, Gemma tries to play matchmaker--only to discover Jonah's secret journals, which hold terrifying secrets about both their lives.