Among the cases featured in Season 4 are: a young man stabs another man who assaulted his brother and attempted to steal from their family-run gas station. Was it attempted murder or self-defense? Police reopen the cold case murder of a young Marine who was killed in a hotel room and charge the woman who was with him at the time. Is she the mastermind behind his death or an innocent victim? A man falls asleep while driving and kills a construction worker in the road. Was he a reckless driver or an innocent man with an undiagnosed medical condition? A traveling nurse is pulled over for a traffic violation in New Mexico and is arrested for felony burglary carried out in her home state of Ohio. Is she a thug for hire or innocent with a rock-solid alibi?