After a slow start this book becomes "can't put it down" material. Rendell's research is exceptionally detailed and you really get to understand how doping benefits cyclists. Delving into Pantani's personal life is where the book excels, rivets, and upsets though. Reading about his decline and cocaine problems was extremely moving, and even after putting the book down for an evening my mind would still be going over the content. Well worth reading, whether you're a cycling fan or not. The fine line between genius and madness is well revealed here, showing how the gifted Pantani slipped onto the wrong side of the line.