EXCERPT: Yet an investigation by The Mail on Sunday has revealed that, for all Mr Obama's reputation for straight talking and the compelling narrative of his recollections, they are largely myth. We have discovered that his father was not just a deeply flawed individual but an abusive bigamist and an egomaniac, whose life was ruined not by racism or corruption but his own weaknesses. And, devastatingly, the testimony has come from Mr Obama's own relatives and family friends. ... Grandfather Obama sent his son to a missionary school but after completing his education, the youth could find little work except...