At the height of the war in the Atlantic, Lt-Cdr Keith Morrison wrote a last letter to his wife and went to face a heroic death. Sixty-five years later, the newly discovered document sheds fresh light on a remarkable man caught up in extraordinary circumstances. Nigel Blundell pieces his story together, while we reprint the long-lost letterThe 37 freighters and tankers of Convoy HX84 were seven days out of Halifax, Nova Scotia - halfway home but still in mid-Atlantic - when the pocket battleship Admiral Scheer was sighted on the horizon. The convoy's sole escort, an ancient converted cargo ship...