On March 8, 2014, Malaysia Airlines Flight 370 vanished from the skies, beginning one of the most perplexing mysteries in aviation history. The Boeing 777, carrying 239 passengers and crew on a routine journey from Kuala Lumpur to Beijing, disappeared without warning. What followed was the largest, most expensive, and most complex search effort ever mounted-spanning years, oceans, and international borders. This book traces the story from the flight's final routine messages to the discovery of debris on far-flung coastlines. It details the unprecedented search operations across the Indian Ocean, the satellite data analysis that reshaped investigative methods, and the painstaking efforts to understand what could have happened to the aircraft. Alongside the technical and logistical challenges, it reflects on the human cost-the families waiting for answers, the communities involved in the search, and the enduring grief and resilience. Drawing on confirmed facts, official reports, and scientific evidence, MH370: What We Know, What We Searched, What Remains offers a comprehensive chronicle of the disappearance, the search, and its legacy. It is both a record of an extraordinary investigation and a sober reminder of the limits of modern technology in solving a mystery that continues to resonate worldwide.