Twelve days. Five kids. Many special effects. One giant mystery.Hayley Whelan has spent her whole life dreaming of making a horror movie - and not just the type of movie that kids make on their dodgy second-hand iPhones. When her grandma passes away, she inherits the money for a proper, grown-up camera. But before Hayley even calls ‘Action!’, strange things start happening…Someone is sabotaging Hayley’s movie - but who? Why? And can Hayley finish her movie in time for the premiere?From Australia’s brightest new middle-grade talent comes this love song to movies, friendship and the summer holidays.