No sooner has 15-year-old Lee Keegan been expelled from his private school than an apocalyptic event wipes out most of the world's population. With his father dead and mother trapped abroad, Lee is given one instruction: go back to school. But safety and security at St. Mark's School for Boys is in short supply. Its high walls can't stop the local parish council from forming a militia and imposing marshal law, while inside the dorms the end of the world is having a dangerous effect on his best friend and his unrequited crush on the school nurse isn't helping him concentrate on staying alive.
                                    Oscar Kennedy
Lee Keegan
                                    Liam Lau Fernandez
Sean MacKillick
                                    Alex Macqueen
Mr. Bates
                                    Samantha Bond
Georgina
                                    Jasmine Blackborow
Matron
                                    Sebastian Croft
Pugh
                                    Benjamin Dilloway
Stanley
                                    Freya Parks
Claire Baker
                                    Steve Oram
Terry Keegan
                                    Anthony Stewart Head
Stanley
                                    Gordon Alexander
John Smith
                                    Richard Elfyn
Mr. Hammond
                                    Max Raphael
Wylie
                                    Jayden Elijah
Wolf-Barry
                                    Paul Blackwell
Militant