Smith v. Cain

Background

Juan Smith was tried for killing five people during an armed robbery based almost entirely on one eyewitness, Larry Boatner. Boatner testified he had been face to face with the first gunman and identified Smith at trial. Years later Smith obtained police files showing Detective John Ronquillo’s notes with many statements from Boatner saying he could not identify the perpetrators or could not see faces. Those notes were not given to Smith at trial.

Reasoning

The Court asked whether the prosecutor’s failure to turn over Boatner’s contradictory statements violated Brady, the rule requiring disclosure of favorable evidence. The State conceded the notes were favorable and undisclosed. Because Boatner’s trial testimony was the sole link to Smith and the undisclosed notes directly contradicted that testimony, the Court found a reasonable probability the withheld evidence undermined confidence in the verdict and therefore was material.

Real world impact

The Court reversed the conviction and sent the case back for further proceedings. The ruling means that when a prosecution’s case rests largely on one eyewitness, undisclosed police notes showing the witness could not identify a suspect can require a new look at the conviction. The decision emphasizes prosecutors’ duty to disclose evidence that could weaken an eyewitness’s certainty.

Dissents or concurrances

Justice Thomas dissented, arguing the undisclosed notes were not likely to change the verdict when weighed against corroborating evidence: on-scene descriptions, photo-array identifications, and other police information that linked Smith to the crime.