Gerald Bull was a brilliant Canadian engineer whose lifelong obsession with long-range artillery pushed him into the shadows of global politics. After developing advanced supergun technology during the Cold War, he partnered with Iraq to build Project Babylon, a massive cannon capable of launching satellites or potentially delivering weapons across continents. As the project neared completion, Bull was shot five times outside his Brussels apartment by an unknown assassin who left no trace. The killing stunned intelligence communities worldwide, and speculation quickly focused on international agencies that viewed his work as a threat to global stability. His death ended one of the most ambitious and controversial engineering projects ever attempted and remains an unsolved geopolitical mystery.