Twenty-six-year-old Rory rarely leaves her apartment, though her little dog Buster keeps her company. Days are spent working for her aunt's PI business and watching and imagining histories for the homeless men, the Dossers, across the road. At night, she walks Buster on the roof, gazes at the stars and wonders.

The night before New Year's Eve, one of the Dossers is murdered, an incident which brings the world - police, new neighbours, her dark past and new possibilities - crashing through Rory's front door.

She thought she was keeping her fears at bay. But has her sanctuary turned into her prison? Or is it safer for everyone if Rory stays locked away?