As Glenn Miller’s musical career soared, he traded in his commercial success for a military uniform to entertain US troops during World War II. Then, on a foggy afternoon, December 15, 1944, he took off from England heading for France. His plane vanished over the English Channel. Glenn Miller was never seen again. Since that fateful day, Glenn Miller’s disappearance has remained a mystery. Did friendly fire destroy the plane? Was Miller involved in espionage? Was he on a secret mission to end the war? Recent discoveries—including an intriguing entry in an aircraft spotter’s log—give the History Detectives fresh leads and new clues to explore. Along the way, they learn of the unusual role Glenn Miller and his music played in winning hearts and minds during World War II. Can they find out what happened to this beloved bandleader once and for all?