From every corner of America, they crossed the Atlantic to destroy the Nazi war machine on its own the B-17 bomber crews flying bloody bombing missions over northern Europe. On March 6, 1944, General Doolittle launched a massive operation he believed would change the air war. The largest air armada the Eighth Army Air Force had ever launched. The first full-scale daylight bombing of Berlin, capital of the Third Reich. This horrifying battle would become known by the men who survived it as Black Monday. From Craig DiLouie, the creator of Hell’s Eden, Strike!, and the bestselling Crash Dive and Armor series, Castles in The Sky tells the story of one such Flying Fortress crew. It’s a story of courage and grit in the face of impossible odds and the search for meaning in the madness of war. The 250th mission of the Eighth Army Air Force and the last for Pop’s Flying Circus.