The Hockey Stick Illusion: Climategate and the Corruption of Science is a book written by Andrew Montford and published by Stacey International in 2010, which promotes climate change denial. Montford, an accountant and science publisher who publishes a blog called 'Bishop Hill', writes about the "hockey stick graph" of global temperatures for the last 1000 years. The book has been criticized for its inaccuracies. Source: Wikipedia (en)