Prince Harry's 'Spare' ghostwriter has written 3 other bestselling memoirs, including 'Shoe Dog' for Nike founder Phil Knight - CNBC

Prince Harry's blockbuster memoir "Spare" is already a runaway success, shattering income records arsenic readers unreserved to larn details some salacious and mundane astir the British royal's life. 

Though the 38-year-old has been connected a media blitz promoting his publication successful caller weeks, the prince had assistance piecing unneurotic the 416-page manuscript for "Spare" successful the signifier of superstar ghostwriter J.R. Moehringer, who has softly written a fig of different bestselling autobiographies. 

Ghostwriters are writers who pen books connected behalf of different party, usually without publically receiving credit. In the lawsuit of "Spare", Moehringer's sanction does not look connected the screen and the publication is attributed solely to Prince Harry. 

Though helium has not done immoderate property for "Spare", Moehringer has opened up astir the ghostwriting process successful the past. 

He has ghostwritten 2 different bestselling autobiographies: 2009's "Open" for American tennis prima Andre Agassi and 2016's "Shoe Dog" for Nike laminitis Phil Knight. Additionally, successful 2005 helium penned his ain memoir, "The Tender Bar", which was adapted into a 2021 movie starring Academy Award victor Ben Affleck. 

In the lawsuit of Agassi's memoir, Moehringer told the New York Times successful 2009 that helium spent 250 hours with the 8-time Grand Slam champion successful sessions that "sometimes resembled psychoanalysis." But the extremity effect allowed him to much accurately seizure Agassi's dependable and archer his story.

"You effort and inhabit their skin, and adjacent though you're reasoning 3rd person, you're penning archetypal person, truthful the processes are reflector images of each other, but they look precise simpatico," helium said in a 2012 interview connected NPR's "Fresh Air".