Prince Harry has written a book about his life, his mother's death, and his relationship with newspapers. It is called "Spare". This word means something that is only there in case another thing is lost or broken. The 410-page book is in 16 languages. It is the fastest selling non-fiction book ever written.

A member of Britain's Royal Family has never spoken so honestly before. Harry writes about why he moved to the USA, family arguments, and why he stopped being a royal. He said UK newspapers have written many bad things about his wife Meghan. He also wrote about killing Taliban fighters in Afghanistan.