From Steve McIntyre's earliest attempts to reproduce Michael Mann's Hockey Stick graph, to the explosive publication of his work and the launch of a congressional inquiry, The Hockey Stick Illusion is a remarkable tale of scientific misconduct and amateur sleuthing. It explains the complex science of this most controversial of temperature reconstructions in layperson's language and lays bare the remarkable extent to which climatologists have been willing to break their own rules in order to defend climate science's most famous finding.