Thompson v. Keohane

In Thompson v. Keohane, Warden, et al., 133 L. Ed. 2d 383 (1995), the Supreme Court reviewed a Miranda-related dispute arising from a murder investigation in Alaska. Carl Thompson was questioned at Alaska state trooper headquarters during a tape-recorded interview that lasted about two hours. During that interview, Thompson confessed that he killed his former wife. The confession was later used against him at his Alaska state-court trial, and he was convicted of first-degree murder.

Thompson challenged the use of his confession, arguing that he had been subjected to custodial interrogation without first receiving Miranda warnings. The state courts rejected that argument and treated the interview as noncustodial. Thompson then pursued federal habeas relief. The key dispute became how a federal habeas court should review a state court’s conclusion that a suspect was or was not “in custody” for Miranda purposes.

The case did not turn on whether the police asked questions likely to produce an incriminating response; the interview was plainly an interrogation. The fight was about custody: whether the situation at the trooper headquarters was the kind of restraint on freedom that required officers to give Miranda warnings before questioning.

The plain-English issue was this: when a state court decides that a suspect was not “in custody” for Miranda purposes, must a federal habeas court accept that conclusion as a factual finding unless it is clearly unsupported, or may the federal court independently review whether the facts amounted to custody?

For police officers, the underlying Miranda question is familiar. A person must receive Miranda warnings before custodial interrogation. “Custody” does not depend simply on whether the questioning takes place at a station house or whether the person later confesses. The question is whether, under the circumstances, a reasonable person in the suspect’s position would have felt free to end the questioning and leave.

The legal review question mattered because federal habeas law gives special deference to state-court factual findings. If “custody” were treated as a simple factual finding, federal courts would be more limited in second-guessing the state court. If it were treated as a mixed question of law and fact, federal courts could independently decide whether the established circumstances legally amounted to custody.

The Supreme Court held that the ultimate question whether a suspect was “in custody” for Miranda purposes is a mixed question of law and fact, not a purely factual finding. Justice Ginsburg wrote the opinion of the Court.

The Court explained that custody analysis has two parts. First, courts identify the historical facts: what happened during the encounter, where it occurred, how long it lasted, what officers said, what the suspect was told, and how the questioning unfolded. Those basic facts are factual findings. Second, courts decide whether, given those facts, a reasonable person would have felt at liberty to terminate the interrogation and leave. That second step is the legal custody determination.

Because that final custody determination applies a legal standard to the facts, the Supreme Court ruled that it is not entitled to the same presumption of correctness as ordinary historical factfinding in federal habeas review. A federal habeas court must give proper deference to the state court’s findings about what actually happened, but it must independently review whether those facts amounted to Miranda custody.

The Court did not use this decision to announce that every station-house interview is custodial. Nor did it decide, on the merits, that Thompson necessarily was in custody during the interview. The practical rule from Thompson v. Keohane, Warden, et al. is that “in custody” is a legal conclusion drawn from the total circumstances, and appellate or habeas courts may independently review that conclusion.

For officers and detectives, Thompson v. Keohane, Warden, et al. reinforces that Miranda custody is not controlled by labels alone. Saying a person is “not under arrest” can matter, but it does not automatically decide the issue. Likewise, questioning someone at a station or headquarters does not automatically make the person “in custody,” but it is an important circumstance courts will consider.

The case also shows why the details of an interview matter. Courts will look at the entire setting: whether the person came voluntarily, whether the person was told he could leave, whether the person’s movement was restricted, the length and tone of the questioning, whether the interview became accusatory, and what a reasonable person would have understood about his ability to stop the interview. If a court later finds that a reasonable person would not have felt free to leave, Miranda warnings were required before interrogation.

The decision is especially important for documentation. Because courts separate historical facts from the legal custody conclusion, officers should create a clear record of what happened. A recording, clear advisements, and accurate reports about the suspect’s arrival, freedom of movement, breaks, tone of questioning, and departure or arrest can become central to later review.

The safest operational lesson is not that officers must Mirandize every person they interview at a station. The more accurate lesson is that when an interview begins to look like custody, officers should recognize the risk and give Miranda warnings before continuing interrogation. Thompson v. Keohane, Warden, et al. makes clear that later courts will independently evaluate custody under an objective reasonable-person standard, even when the state trial court originally viewed the interview as noncustodial.