Kirsty's family have escaped London for the remote Welsh mountains, leaving their dark past behind. Opening their guesthouse marks the start of an idyllic life some people would kill for. But their first guest isn't one they expected. Kirsty hasn't spoken to her cousin since a lie tore their family apart 17 years ago. Why has Selena chosen now to force her way back into their still-fragile lives? Be careful who you invite inside your dream home...