Her father's sudden death has not only left Tilly Bellamy with a house in the small town of Swans Bridge, but also with the secret he has been trying to uncover for the past 25 years. Digging through his old Case Files grief-struck, she not only finds the purpose of his life and career - but also clues to what happened to her mother. Like many others she has gone missing in the woods surrounding Swans Bridge, leaving her father behind in shambles. Following his footsteps and under the looming shadows of the century-old trees, she begins the hunt for what tore her family apart.