"I was surprised by what the lawyers let through," says Andrew Lownie, whose new book The Rise and Fall of the House of York pulls back the curtain on the extravagant, sleazy, and turbulent private lives of Prince Andrew and Sarah Ferguson .

The royal biographer reveals a side of the Duke and Duchess of York rarely seen before in his tome – one marked by scandalous affairs and reckless spending – and a source has told RadarOnline.com : "The contents of this book have rocked Andrew and Sarah to the core." Article continues below advertisement

A Bizarre Relationship Exposed

Our insider added: "They are extremely accurate and backed up by top sources, so they know they can't deny anything in it. All their sleaze and spending have come out, and now they are both hanging their hea

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