For the residents of Blasket Island, isolation is completely normal. Off the southern Irish coast, they don't get many tourists and sometimes even the supply boats don't even make it to the harbour. They disappear into the night, sucked away by the shadows. The same shadows plague the local townspeople, rattling at the windows and screaming at the doors. Disappearances are frequent but the survivors know not to look for the victims. Evelyn has lived on the island all her life, and fights a private war against the shadows. She can feel them coming and knows when to lock the doors and turn out the lights. But the shadows are determined to destroy her, even if they have to wreck the entire island in the process.