Louisiana death penalty defendant Robert McCoy insists on his innocence in the crime of murdering his mother-in-law, her husband and her 17-year-old grandson. However, there is substantial evidence against him, including claims that the victim's cellphone and the gun used to commit the crime were found in a car McCoy was riding in. There was an incriminating 911 recording, too, and other evidence.
For decades, Richard Phillips has insisted upon his innocence in a 1971 murder in Detroit. Now 71, Phillips may finally be released from prison after his co-defendant admitted Phillips played no role in the crime. A judge recently dismissed his conviction, although he also granted prosecutors a new trial. Prosecutors in Wayne County, Michigan, have vowed to appeal the reversal.
In 2004, the American Psychological Association said that there's "little evidence that polygraph tests can accurately detect lies." There simply isn't sufficient proof that the physiological responses measured by the so-called "lie detector" machine are actually caused by lying.