Midnight, Sunday, June 18, 1815. Britain holds its breath. Since Napoleon’s escape from Elba in February, Europe has been jolted from 11 months of peace back into the frenzied panic of a war it believed had ended. The nation is awash in reports and rumors. The Battle of Waterloo is close at hand. WENT THE DAY WELL? is an astonishing hour-by-hour chronicle that starts the day before the battle that reset the course of world history and continues to its aftermath.