Cabinet ministers were bullied out of posts by Gordon Brown's former advisor who leaked information about their private lives to the press, the man himself has admitted.
In his memoir "Power Trip", published today in the Daily Mail, Damien McBride admits to coercing former Home Secretary John Reid into quitting by leaking details of "drinking, fighting and carousing" to the press.
Lord Reid was singled out because he was the last remaining threat to Gordon Brown's chances of leading the Labour party.
Mr McBride started leaking the contents of what he called "a little black book" filled with sordid details of Lord Reid's private escapades.
One story leaked was based around a "drink fuelled indecent proposal" in which Lord Reid turned to one of Mr Brown's closest allies, Dawn Primarolo, and allegedly said at the Commons bar: "I want sex with you."
Gordon Brown's former spin doctor has publicly laid bare the lies, deceit and vendettas at the heart of the former Prime Minister's time in power.
He told the Daily Mail how, when Mr Brown was still Chancellor, Mr McBride took out a potential threat to his employer's leadership bid by fabricating a briefing war between the then Home Secretary, Charles Clarke and a key Blair advisor.
Damien McBride was forced to resign in 2009 when he was exposed at the heart of a potential smear campaign against Conservative MPs.
Mr McBride's book, Power Trip, is serialised in the Daily Mail but will be published in full next week - just in time for the Labour party conference.