After in-depth research of the circumstances of that fateful night, investigative writer and former journalist Noel Botham finally reveals what he alleges to be the truth - Princess Diana fell victim to a ruthlessly executed assassination. Twenty years later, the tragedy still shapes Britain as we know it today. Reporting from the innermost sanctums of British intelligence and royalty, Botham reveals shocking answers to what he claims is one of the UK's most successfully kept secrets.