Did a murderer escape justice to protect a future king? That's the theory about a French courtesan and Edward VIII

In a new book, Andrew Rose alleges that years before Edward the VIII abdicated, he was embroiled in a scandalous affair, involving a French mistress and the murder of an Egyptian Prince.

'The Prince, The Princess and the perfect murder' is available now.

'Edward the VIII's Murderous Mistress' is on Tuesday 23rd April at 9pm on Channel 4.