One of the most celebrated, beloved entertainers of the wartime era takes off from England in heavy fog, heading to France to entertain troops. His plane vanishes. Glenn Millerís disappearance is perhaps the biggest mystery and cold case of World War II. This HISTORY DETECTIVES investigation contains a great deal of new information: Millerís pilot was a rank novice who had never flown over the English Channel, never mind in appalling weather; documents from a Lancaster bomber pilot support another possible accounting of the planeís disappearance; and a 17-year old plane spotterís notebook ó discovered in 2012 at a UK Antiques Roadshow ó answers a question that has long baffled investigators: which route did Millerís aircraft take? In addition, the German-speaking Miller was working for the U.S. Armyís Psychological Warfare Division, recording German language propaganda broadcasts and musical performances.