Since losing her parents in a car crash as a teen, Allie has struggled to cope. Meeting Rory finally made things easier. She's come to rely on him for almost everything, so when he disappears while filming a documentary in the West of Ireland, she fears she'll come undone. Again.

When a couple arrive at the Dublin apartment she and Rory share, claiming to be the new tenants, Allie is distraught. Why did Rory let out their home without telling her? And - where is he?

She seeks refuge at the run-down and reputedly haunted Raven Cottage in the Slieve Bloom mountains, where she and Rory were planning to move one day. Allie slowly starts to build a life for herself - and begins to believe that she might manage to make it alone.

But then Rory's car is found submerged at the end of a pier, nowhere near where he was supposed to be -- and the body in the driver's seat isn't his. Alison starts to revisit her memories of their time together, and begins to question if she can trust them...