1951. The Cold War is heating up. With Soviet troops amassing across Eastern Europe, and the arrests of Julius and Ethel Rosenberg for spilling nuclear secrets, President Harry Truman assigned General Curtis LeMay the task of installing nuclear forces in Britain. On March 22, a massive C-124 Globemaster cargo plane—possibly carrying a 'Fat Man' bomb—was dispatched to Britain with passengers and crew including elite specialists in atomic warfare. Then tragedy struck . . .

The Globemaster never reached its destination. After radio communications ceased over the Atlantic, the plane took a sudden turn, flew hundreds of miles, and was ditched. Survivors disappeared before they could be rescued.

Was this the work of Soviet saboteurs? Was the mission compromised from the very start? And is a 'broken arrow' bomb still lying on the bottom of the ocean? These are just a few of the questions Pulitzer Prize-winning journalist Tod Robberson attempts to answer in the first-ever in-depth investigation into this yet-unsolved mystery.

Meticulously researched and brilliantly told, Globemaster Down tells the fascinating story of two global superpowers in a reckless race toward the brink of nuclear disaster.