tech
A scientist says he can scan prisoners’ brains for signs of evil. Did his disputed science put a man on death row?
Kent Kiehl convinced the US legal system he can find violence in prisoners’ brains. His theories have been since used by defense lawyers – with grave consequences for prisoners

TL;DR
- Kent Kiehl claims to be able to detect violence in prisoners' brains.
- His theories have been accepted by the US legal system.
- Defense lawyers have used his theories in court.
- The use of his theories has had serious consequences for prisoners.