As seen in The Times and updated with new material.

The Sunday Times and New York Times best seller.

This crisis is as big as the abdication - says Lacey, historical advisor to the Crown.

The world has watched Prince William and Prince Harry since they were born. Raised by Princess Diana to be the closest of brothers, how have the boy princes grown into very different, now distanced men?

From royal expert and best-selling author Robert Lacey, this book is an unparalleled insider account of tumult and secrecy revealing the untold details of William and Harry’s early closeness, then estrangement. It asks what happens when two sons are raised for vastly different futures - one burdened with the responsibility of one day becoming king, the other with the knowledge that he will always remain spare.

How have William and Harry each formed their idea of a modern royal’s duty and how they should behave? Were the seeds of damage sowed as Prince Charles and Diana’s marriage painfully unravelled for all the world to see? In the previous generation, how have Prince Charles and Prince Andrew’s lives unfolded in the shadow of the Crown? What choices has Queen Elizabeth II made in marshalling her feuding heirs? What parts have Kate Middleton and Meghan Markle played in helping their husbands to choose their differing paths? And what is the real, unvarnished story behind Harry and Meghan’s dramatic departure?

In the most intimate vision yet of life behind closed doors, with the family’s highs, lows and hardest decisions all laid out, this is a journey into royal life as never offered before.