|Original title||L.A. Confidentiel: Les secrets de Lance Armstrong|
L.A. Confidentiel: Les secrets de Lance Armstrong (L.A. Confidential: Lance Armstrong's Secrets) is a book by sports journalist Pierre Ballester and The Sunday Times sports correspondent David Walsh. The book contains circumstantial evidence of cyclist Lance Armstrong having used performance enhancing drugs. The book has only been published in French.
A key witness for the authors was Armstrong's and his teammates' masseuse and soigneur Emma O'Reilly. She revealed that she has taken clandestine trips to pick up and drop off what she concluded were doping products.
Many of the incidents and allegations in the book were later featured in the USADA 2012 report on the US Postal Service cycling team, which led to Armstrong being stripped of most of his titles by the UCI. Many 2012 news reports would feature O'Reilly and others previously reported on in the book.
In April 2001 he was granted an interview with Armstrong. It left Armstrong angry.
In 2003 Walsh contacted former US Postal soigneur and masseuse Emma O'Reilly. She had been reluctant to talk to the press for years out of loyalty to Armstrong and the team. She claimed that she was motivated to cooperate with Walsh after she came to believe that several riders had died of blood doping. O'Reilly was paid 5,000 pounds, after reviewing several transcripts and chapter drafts and doing PR for the book for Walsh.
 Defamation lawsuits
Armstrong denied the claims. He and his lawyers filed lawsuits in various countries against the book's authors and the publisher Editions de la Martiniere, as well as against newspaper The Sunday Times which referenced the book, and the publishers of magazine "L'Express" which printed excerpts. His UK lawyers also told "every UK paper and broadcaster" to not re-state what was in the book. Armstrong also sued Emma O'Reilly 
Armstrongs lawyers in France included Donald Manasse and Christian Charrière-Bournazel. In the UK he retained the Schillings firm, where  Gideon Benaim and Matthew Himsworth worked on his libel cases.
Armstrong said the following at a news conference in 2004 regarding the suits:
". . . we can't really tolerate it anymore, and we're sick and tired of the allegations . . . We'll do everything we can to fight them. . . . It's unfortunate. It's a few journalists who took this on as a personal mission. Again, enough is enough." - Lance Armstrong, 2004, quoted in the New York Times
Armstrong's lawyers first asked the French courts for an "emergency ruling" to insert a denial into the book, as the book was to come out shortly before the 2004 Tour de France. Judge Catherine Bezio denied the request. According to the Associated Press, the "judge . . . called Armstrong's request an "abuse" of the legal system".
Armstrong then sued the UK newspaper The Sunday Times under English libel law because it published an article referencing the book. The article was ruled in pre-trial to have conveyed the impression that Armstrong was guilty of doping.
Armstrong's lawyers also sued the publisher in a French court regarding eight passages which were claimed to violate French defamation law. They wanted the passages removed or the book pulled from shelves.
In 2006 the lawsuits came to an end. Armstrong reached an out-of-court settlement for a large sum of money with the Sunday Times, which issued an apologetic statement. Emma O'Reilly didn't have to pay, although the emotional toll on her was severe. The French defamation lawsuit was dropped in 2006, which Armstrong's lawyers claimed was due to him being already "vindicated on three different occasions" regarding the allegations. This was referring to UCI's Vrijman report which exonerated Armstrong, an arbitration settlement with SCA promotions, and the aforementioned Sunday Times settlement.
In October 2012, after the USADA report on doping in the US Postal team, the Sunday Times stated it might attempt to recover the money it lost in the suit, and might sue Armstrong for fraud. On October 22, 2012, after the UCI accepted USADA's report, SCA promotions announced it would attempt to recover the money it lost in its arbitration settlement with Armstrong.
- The Last Word, with Matt Cooper, Oct 22 2012, interview with Paul Kimmage on Today FM (Radio Ireland Limited T/A Today FM, Dublin), retr 2012 10 22
- U.S. Postal Service Pro Cycling Team Investigation, 2012, USADA.org
- UCI confirms Lance Armstrong's life ban, Barry Ryan, cyclingnews.com, October 22, 2012
- The World According to Lance, Quentin McDermott and Clay Hichens, October 15, 2012, Four Corners, ABC news (Australia)
- Cycling: Big reveal of Cancer Jesus, 2012 10 21, Paul Kimmage, Independent (Ireland). retr 2012 10 22
- David Walsh: 'It was obvious to me Lance Armstrong was doping' Andrew Pugh, Press Gazette, 11 October 2012, retr 2012 10 20
- USADA U.S. Postal Service Pro Cycling Team Investigation, Oct 2012, affidavit of Emma O'Reilly, retrieved from usada.org on 2012 10 20
- First Edition News for June 18, 2004, French judge to hear Armstrong case, Edited by Chris Henry, 2004 jun 4, cyclingnews.com, retr 2012 10 20
- CYCLING; Armstrong Is Suing Accuser, By RICHARD SANDOMIR; Samuel Abt in Paris contributor, June 16, 2004, New York Times, retr 2012 10 20
- Armstrong Aide Talks of Doping and Price Paid, By MARY PILON, October 12, 2012, from nytimes.com, retr 2012 10 20
- Armstrong v Sunday Times in November Monday, Aug 1, 2005, bikeradar.com, retr 2012 10 20
- Libel star Benaim quits Schillings, 8 June 2012, Sam Chadderton, retr 2012 10 20
- Armstrong wants doping denial in book, ABC News (Australia) Jun 19, 2004, retr 2012 10 20
- Judge calls Armstrong's request 'abuse' of system, Associated Press, 2004 6 21, via espn.go.com, retr 2012 10 20
- The Guardian
- Tour de France News for June 18, 2004: French judge to hear Armstrong case, Edited by Chris Henry, cyclingnews.com, retr 2012 10 20
- "SCA Promotions".
- Pro Cycling News, July 6, 2006 )dead link)
- Roundup: Armstrong drops defamation suits - Sports - International Herald Tribune, New York Times, 2006/07/05, retr 2012 10 20
- Armstrong drops defamation lawsuits in France, Associated Press, Updated 7/6/2006, via USA Today, retr 2012 10 20
- UK newspaper may sue Armstrong over doping libel case, By the CNN Wire Staff, October 13, 2012 retr 2012 10 16
- Armstrong Will Be Asked to Repay $7.5 Million to Bonus Promoter, Mason Levinson, Bloomberg News, republished on SFGate.com, October 22, 2012
 Publication details
- L.A. Confidentiel - Les secrets de Lance Armstrong (2004) ISBN 2-7578-0027-2
- L.A. Officiel (2006) ISBN 978-2-84675-204-6
- From Lance to Landis: Inside the American Doping Controversy at the Tour de France (2007) ISBN 978-0-345-49962-2