Magnificent and engrossing, One Day in August reveals in full for the first time the “Ultra Secret” story behind one of WW2’s most controversial mysteries—and one of Canada’s most sorrowful moments.

In a narrative as powerful and moving as it is authoritative, David O’Keefe rewrites history, connecting Canada’s tragedy at Dieppe with an extraordinary and colourful cast of characters—from the young Commander Ian Fleming, later to become the creator of the James Bond novels, and his team of crack commandos to the code-breaking scientists of Bletchley Park (the closely guarded heart of Britain’s wartime Intelligence and code-breaking work) to those responsible for the planning and conduct of the Dieppe Raid—Admiral John Godfrey, Lord Louis Mountbatten, British Prime Minister Winston Churchill and others. The astonishing story critically changes what we thought we knew.

For seven decades, the objective for the raid has been one of the most perplexing mysteries of WWII. In less than six hours on August 19, 1942, nearly one thousand Canadians—as well as British and Americans—lay dead or dying on the beaches around the French seaside town, with over two thousand other Canadians wounded or captured. These awful losses have left a legacy of bitterness, recrimination and controversy. In the absence of concrete reasons for the raid, myriad theories ranging from incompetence to conspiracy developed.

Over almost two decades of research, sifting through countless recently declassified Intelligence documents, David O’Keefe skillfully pieces together the story like a jigsaw puzzle to reveal the prime reason behind the raid: a highly secret mission designed, in one of Britain’s darkest times, to redress the balance of the war. One Day in Augustprovides a thrilling, multi-layered story that fundamentally changes our understanding of this most tragic and pivotal chapter in Canada’s history.