Governments jail people who are perceived as threats. More often than not the governments believe the threats to be genuine and the incarcerations to be legally sound. But governments are sometimes wrong. When a court issues a writ of habeas corpus (also known as the Great Writ of Liberty), it orders jailers to bring a prisoner into court and requires them to persuade a neutral judicial officer of the the Great Writ of Liberty), it orders jailers to bring a prisoner into court and requires them to persuade a neutral judicial officer of the correctness of their legal and factual assertions, or else release the captive. Unsurprisingly, jailers frequently resist being called to account. Much of the Anglo-American history of the rule of law has...