Mice jellemzők

Sixteen-year-old Shelley has been badly bullied at school. And her mum has been left reeling by her recent divorce from Shelley's overbearing dad. So Shelley is optimistic when they move to cottage in the middle of the quiet countryside - a place where they can be happy at last.
But then one night someone breaks into their house...
In the twisted tale that follows Shelley finds herself wondering - if she and her mum aren't mice after all, what are they?