No mobile, no internet, no radio or TV reception, no stock in supermarkets, no landlines, and then... no electricity. The UK is throttled by a massive physical and cyber attack. Police, army, government and hospitals are rendered helpless and many people die. Chaos and anarchy quickly take hold.Sam and his girlfriend Shani flee north from London to the house of his parents - Henry, recently retired, and Josephine. Their only chance is to head for...