'Problems with the blood samples from the body of Princess Diana's driver suggest a "conspiracy or a cock-up", a toxicologist has told her inquest.
Professor Robert Forrest said "biologically inexplicable" levels of carbon monoxide in Henri Paul's blood were "analytical error or a mystery".
He said if the Ritz security chief had been exposed to that level of the gas, he would have appeared ill.'
What is behind this 'mystery? The blood that was tested was not Henri Paul's.