Anyone who studies police corruption will be aware of the Knapp Commission that examined allegations of police corruption in New York City in the 1970s. Not only was this famous because of the movie Serpico, but also most of the terminology used in corruption studies of police came from the report of the commission. Michael F. Armstrong was the chief counsel to the commission and this book is a history of the formation and operation of the inquiry. Holding a major commission of inquiry is not something that is done routinely. In his own words, Armstrong says they “fumbled” along working out how one discovers, let alone investigates corrupt police.

They Wished they were Honest: The Knapp Commission and New York City Police Corruption (Columbia Press, 2012)reads like an extended episode of The Wire, combining political elements with investigative planning and transcripts of surveillance recordings of bribe negotiations. It is very revealing of the nature of corruption that existed at the time. The book follows some key from Xavier Hollander, the Happy Hooker, through small time corrupt officers (grass eaters) through to hardcore predatory corrupt police (meat eaters). Not only does Armstrong provide an entertaining history of the inquiry but he reveals the full gamut of social forces that make such inquiries difficult to implement successfully. Police corruption is an essential factor in any form of large scale illicit activity, be it prostitution, gambling or drugs. Police have a service to sell, namely protection, and there are many illegal operators who are willing to pay for it to ensure their business runs without interruption. While the Knapp Commission happened 40 years ago, the corruption still exists at varying levels in all communities. Armstrong’s book helps us understand how and why it happens and, especially, how difficult it can be to stop.