Readers of John Boyne, Michael Frayn, Mark Haddon and Michelle Magorian, should love this story of wartime Britain.1937, South London. With threat of war in Europe. Billy’s own war begins when he meets his cousin, Kenneth, a devious psychological bully. With the same emotions that brought Hitler to power - envy of strength, and desire for new territory - Kenneth's invasion begins. Billy imagines he owns the precious Cossack sabre he's secretly seen. This fantasy sustains him through bullying, evacuation, hardships and eventually, the dreadful reality of war. But ultimately, will the sabre become a threat to his future?