The secret deep
(Book)

Originally published in the United Kingdom in 2018 by Chicken House.

When Aster wakes alone on a tropical island, she has no idea what's happened, why she's there, or where to find her younger sister, Poppy. Her last memories are blurred. All she can remember is being on a boat with her aunt and other members of the ecovillage where she was sent to live after the death of her mother. But Sam, who once met the sisters on a plane, makes links between the mystery of their disappearance and suspicious happenings in his own life. Though Aster can't think clearly, she feels the answers to all her questions may be buried beneath the sea. But nothing can prepare her for the secrets and revelations that she will uncover in her search for her sister. The more Aster searches for Poppy, the stranger things get. There is a secret deep in the water. A secret with the potential to change medical history.

Awakening stranded on a tropical island with no memory of what happened, Aster investigates a secret underwater world to find her missing sister, while Sam connects their disappearance to suspicious events in his own life.