There is a beast inside her, a monster. It wants to scream, it wants to tear things apart.

1816. Mary, 18 years old, is staying in a villa on Lake Geneva with her lover Percy Shelley. She is tormented by his infidelities, haunted by the loss of her baby daughter.

Then one evening with friends, as storms rage outside and laudanum stirs their imaginations, Lord Byron challenges everyone to write a ghost story, and something fierce and wild awakens in Mary.

Memories surface of the long, strange summer she once spent with a family in Scotland, where she found herself falling in love with the enigmatic Isabella Baxter. She learned tales of mythical beasts, witches and spirits. And she encountered real monsters – both in the rocky wilds and far, far closer to home ...

WARNING: CONTAINS GRAPHIC CONTENT