This one I may actually lay some money on the table for From Lance to Landis: Inside the American Doping Controversy at the Tour de France by David Walsh.
Yeah, that David Walsh.
Walsh has spent eight years investigating the doping allegations and has on-the-record testimony of numerous named sources, including friends, team management, riders, government officials, and adversaries within the cycling community.
The result, (the publisher) Ballantine says, is an account “from deep inside the sport, covering the charges, the admissions and the denials, which riders have been accused and the elaborate and scientific methods available to riders who want to beat the system.”
Source: velonews.com