In the case of Wyrick, Warden, Missouri State Penitentiary v. Fields (1982), the U.S Supreme Court ruled in favor of the petitioner, overturning a decision made by the United States Court of Appeals for the Eighth Circuit. The respondent, Fields had been convicted for first-degree murder and sentenced to death in Missouri state court but claimed his Fifth Amendment rights were violated when he was asked to take a sodium amytal interview without being informed that it could be used against him at trial. However, after reviewing evidence from both sides including transcripts from pre-trial hearings where Fields' attorney agreed to have him undergo this procedure knowing its implications; and considering that no actual testimony or confession was obtained during this process - only an agreement to take a polygraph test which ultimately led to incriminating statements -  the Supreme Court held that there was no violation of Field's constitutional rights.

In the dissenting opinion for Wyrick, Warden, Missouri State Penitentiary v. Fields, Justice William Brennan disagreed with the majority's decision to overturn a lower court ruling that had granted habeas corpus relief to prisoner Robert Anthony Fields. He argued that the state of Missouri violated Field’s Sixth Amendment right by misleading him into waiving his right to counsel during a police-administered polygraph test. The justice emphasized that it was not clear whether Fields fully understood he was entitled to have an attorney present during this critical stage of proceedings and expressed concern about potential coercion or manipulation in obtaining waivers from defendants who might be ignorant of their rights. Furthermore, Brennan criticized the majority for making assumptions about what transpired between Fields and law enforcement officers without having all necessary factual findings at hand.