Before Hiroshima, there was Halifax. In 1917 the busy Canadian port was crowded with ships leaving for war-torn Europe. On December 6, two of them, the Mont Blanc and the Imo, collided in the hard-to-navigate Narrows of the harbor. Within minutes, the Mont Blanc, ablaze, grounded against the city's docks. The explosion that followed would devastate the city and shock the world. Set against the background of World War I, Curse of the Narrows is the first major account of the world's largest pre-atomic explosion that set in motion a remarkable relief effort originating from Boston.