Miranda v. Arizona has been a prominent fixture of the American criminal justice system, as well as police television shows and movies, for more than a third of a century. And when, amid considerable fanfare, the Supreme Court in June 2000 announced its decision in Dickerson v. United States, it appeared that Miranda would retain that status for the foreseeable future. In Dickerson, a surprisingly large 7–2 majority settled a long-standing debate about the constitutional legitimacy of Miranda, holding that the Miranda rules are firmly grounded in the Fifth Amendment’s self-incrimination clause. But now, a mere three years later, Miranda’s fortunes have shifted dramatically. In May of this year, a divided Supreme Court cast doubt on whether ...