Introduction: After her father and grandfather's tragic drowning, seventeen-year-old Mira reluctantly moves with her mother to an old Victorian house perched on the Maine coast. Already struggling with depression and grief, Mira discovers an ancient diary hidden in her new bedroom, penned by Charlotte Winslow鈥攁 girl her same age who lived in the house during the 1800s and mysteriously disappeared.As Mira delves deeper into Charlotte's diary, she begins experiencing inexplicable phenomena.  She finds herself drawn to the ocean despite her fear of it, and the line between reality and delusion gradually blurs as Mira's experiences begin to mirror Charlotte's own descent into obsession with the sea. Is she following in Charlotte's footsteps, destined for a similar fate? Or is her grief-stricken mind manufacturing connections that don't exist?The boundary between psychological breakdown and supernatural transformation grows increasingly unclear. As Mira's isolation deepens, she finds herself drawn repeatedly to the ocean's depths, just as Charlotte was before her. Mira must confront the possibility that she's either losing her grip on sanity, or undergoing a metamorphosis that will forever alter her humanity....