The Abbotts' new lodger Luke hasn't told them much about himself, but they can't expect to know everything about a stranger who's just moved in. Only Luke keeps asking about their family photos, and snooping through their things. Why does he want to know everything about them? Then, suddenly, Mum Mel texts the family to say she needs a break. But Mel has never gone away on her own before. And now it's been days and no one can get hold of her. While daughters Jen and Amy frantically try to find their mum they're alone with Luke. They're scared, and they should be. The Abbotts' house is full of secrets and someone is prepared to go to horrifying lengths to protect them. They say people never tell the whole truth. They're right.