Midnight on the Marne by Sarah Adlakha. Published by Macmillan Audiobooks. Narrated by John Pirhalla, et al

George Mountcastle is an American soldier in France during World War I where he meets and falls in love with nurse (and spy), Marcelle Marchand. Fighting alongside his best friend, Philip, George makes a fateful decision that will save Philip’s life, but drastically change the outcome of the war. In this alternate world, Germany wins the war, leaving Marcelle, her twin Rosalie, George and Philip fugitives in a now permanently occupied France. When George is given the chance to set history right, will he do so, even if it means making the ultimate sacrifice? The Butterfly Effect is one of the most fascinating philosophical debates out there and Adlakha riffs on it to great effect