Andrew Montford wrote The Hockey Stick Illusion: Climategate and the Corruption of Science . Montford is sharply critical of the quality of the Mann et al. analysis that yielded the iconic hockey-stick graph, and reports Stephen McIntyre's efforts to obtain the data behind the graph. The book has received favorable reviews from George Gilder, Matt Ridley, Andrew Orlowski and others.
A favorable review of Montford's book by George Gilder "What is shocking--and I use the word advisedly as a confirmed sceptic not easily shocked--is the so called science. I never imagined that it was quite this bad. It is shoddy beyond easy belief." -- George Gilder