Growing up north of Toronto, R.H. Thomson's imagination was captured by romantic notions of war. He spent his days playing with toy soldiers on the carpet of his grandmother's house, recreating the Battle of Britain with model planes in his bedroom, or sitting at the local theatre watching World War II B movies - ones that offered a very clear perspective on who were the heroes and who the villains; which side were the victors and which the vanquished. Yet Thomson's childhood was also shaped by the spirits of real-life warriors in his family, their fates a brutal and more complicated reminder of the true human cost of war. Eight of Robert's great uncles fought in the First World War, while his great Aunt Margaret served as a wartime surgical nurse in Europe. Throughout their lives, the great uncles, as well as great aunts and cousins, were faithful letter writers, their correspondence offering profound insights into their experiences on the front lines to their loved ones back home, a somber record of the sacrifice the family paid. In By the Ghost Light, R.H. Thomson offers an extraordinary look at his family's history while providing a powerful examination of how we understand war and its aftermath.