I'm just surprised it's taken ten years...

In The Guardian:

The biggest thrillers of all time - The Day of the Jackal and The Da Vinci Code - built their conspiracy plots around real historical events. So it was inevitable that the death of Princess Diana would get the same treatment. In July, the month before the 10th anniversary of the Paris crash, Transworld will publish The Accident Man by Tom Cain (the pseudonym of a "well-known investigative journalist"). The book stars an assassin who ordinarily targets "bad people", but who realises, after engineering a car accident, that he has been set up to murder the royal. The branch of Waterstone's at Harrods - the store owned by Dodi Fayed's father, Mohamed Al Fayed - has not yet decided whether to stock the book.

The Telegraph calls it a bad idea