Josiah Sutton was convicted of rape. He was five inches shorter and 65 pounds lighter than the suspect described by the victim, but at trial a lab analyst testified that his DNA was found at the crime scene. His case looked like many others -- arrest, swab, match, conviction. But there was just one problem -- Sutton was innocent. p We think of DNA forensics as an infallible science that catches the bad guys and exonerates the innocent. But when the science goes rogue, it can lead to a gross miscarriage of justice. Erin Murphy exposes the dark side of forensic DNA testing crime labs that receive little oversight and produce inconsistent results prosecutors who push to test smaller and poorer-quality samples, inviting error and bias law-enforcement officers who compile massive, unregulated, and racially skewed DNA databases and industry lobbyists who push policies of stop and spit. p DNA testing is rightly seen as a transformative technological breakthrough, but we should be wary of plac