Why does nearly every culture on Earth tell the same story about a great flood? From the Qur'an and the Bible to ancient Mesopotamia, India, Greece, China, the Norse sagas, Aboriginal Australia, and the Americas — dozens of civilizations, separated by oceans and millennia, preserve nearly identical accounts: a catastrophic deluge, a warning, a vessel, a survivor, and a new beginning. Is this coincidence, or shared memory? The Forgotten Flood investigates this question with intellectual honesty and methodological rigor, treating scripture, mythology, and geology as three different kinds of witness — presenting the evidence, strong and weak, settled and contested, and letting the reader judge. This is not a book that pretends to have all the answers. It is a book that asks the right questions.