"Since the Supreme Court's Miranda decision in 1966, a number of important developments affecting custodial interrogation have occurred. In 1966, the U. S. Supreme Court handed down its landmark decision in Miranda v. Arizona.1 This article reviews Miranda and discusses some important developments since that decision. First, the article addresses the degree to which a statement taken in violation of Miranda can be used for impeachment purposes and whether evidence derived from a Miranda violation is admissible. It then looks at the extent to which Miranda applies to undercover police interrogation and whether Miranda warnings are required prior to routine booking questions. Next, the article comments on the development of the so-called 'public safety' exception and whether police may continue to interrogate a suspect after he makes an equivocal request for a lawyer. Finally, it examines a statutory substitute for Miranda that has yet to receive constitutional review by the Supreme Court."