It's the summer of 1889 in London, and the royal family is in crisis.

It is well known in polite society that the Prince of Wales's eldest son and his aristocratic acolytes are regulars at 19 Cleveland Street - a male brothel in London's West End. Bad behaviour by the gentry is accepted, but it must stay behind closed doors; they can do what they wish, but the rule that rules all is silence. The Establishment has always closed ranks - a word here and there from powerful people will put rumours swiftly to bed.

But not this time.

Onto this stage walks Detective Inspector Frederick Abberline of Scotland Yard, fresh from leading the disastrous Jack the Ripper investigation the previous year. Now the reputations of men who rule half the world are under threat from a scandal that stretches all the way to the corridors of Buckingham Palace.