In a breathtaking moment lasting less than ten seconds, skimming the rooftops of Brussels, Jean de Selys Longchamps would etch his name into the annals of history. On 20 January 1943, piloting his Hawker Typhoon, he daringly strafed the Gestapo's headquarters in Brussels, sparking an unprecedented wave of enthusiasm among the occupied Belgian populace. In that instant, a legend was forged. While the story of this audacious raid has captivated audiences worldwide, it has also been mired in a myriad of exaggerated tales and obscured by myths. This biography aims to clear the mist, leveraging an array of sources from the de Selys Longchamps family's private archives, including the pilot's flying logbook, personal journals, correspondence, and photo albums. Augmented by previously unreleased archives, testimonials from fellow pilots and family members, and an exhaustive bibliography, this work meticulously illuminates one of the Second World War's most remarkable narratives. With a keen eye for detail and an unwavering commitment to accuracy, the book delves deep into the life of a man who transcended the turmoil of his times. From his early days to the pivotal raid and beyond, it paints a vivid picture of a figure who, in the face of overwhelming adversity, showcased the indomitable spirit of resistance. Richly illustrated and thoroughly researched, this biography not only honours the memory of Jean de Selys Longchamps but also provides an invaluable insight into the era that shaped his character. More than a historical account, this biography is a tribute to the endurance of the human spirit and to the bravery that compels individuals to resist oppression, offering unparalleled insights into the intricacies of wartime aviation.