An investigation into the helicopter crash on 2 June 1994, when 29 passengers and crew were killed in their RAF Chinook Mark II as it hit the mountains of the Mull of Kintyre. The Special Service pilots and crew were transporting 25 top British Intelligence personnel from MI5, the RUC and the SAS to a secret top-level security meeting. Now former RAF officer John Nichol uncovers evidence that the pilots, originally blamed for the disaster, may have been innocent.