Prince Harry reportedly helped his uncle write a controversial new book, according to a report in the Portuguese press. The author is Charles Spencer, brother of Diana, the late princess often remembered as 'the people's princess'. In the book, Spencer makes a damaging claim about King Charles III, saying that he was happy when Diana died. Diana was killed in a car crash in Paris in 1997, and the memory still shapes how the royal family deals with media scrutiny. Harry's alleged role as a behind-the-scenes contributor would be striking, given how public his break with the royals has already been through interviews, a memoir and a documentary series. If the claim stands, it deepens the rift between the King and his younger son at a time when the two are believed to be trying to repair relations. Neither the palace nor Spencer had responded publicly to the report at the time of writing. Attention now turns to the book itself, and to how firmly the publisher stands behind the passage.