Miranda v. Arizona (1966)
Ernest Miranda was arrested in Arizona , and after being interrogated by police, confessed to robbery, kidnapping and rape.   He was convicted on basis of his confession, since no other evidence was presented in court.  The Supreme Court ordered a retrial.  In its decision it formulated what is known as the "Miranda Warning" – anyone being held by the police must be informed before being interrogated that he has the right to remain silent; that anything he says can be used against him in a court of law; that he has the right to have an attorney present; and that an attorney will be appointed if he cannot afford to pay one.   The court stated that if, at any time prior to or during questioning, the person indicates that he wishes to remain silent, the interrogation must cease.  "If the individual states that he wants an attorney, the interrogation must cease until an attorney is present. At that time, the individual must have an opportunity to confer with the attorney and to have him present during any subsequent questioning."  Miranda was retried without his confession being used in court.  On the basis of other evidence he was again convicted.

http://www.oyez.org/cases/1960-1969/1965/1965_759/