There’s a book called Rip in Heaven, by Jeanine Cummins, that details the rape and murder of two young women and how their cousin, who was with them when they were attacked, was not only arrested but seemingly confessed to a crime he didn’t commit. It was only the accident of finding the owner of a stolen flashlight that turned up the real murderers. And of course there is the Central Park 5. I’m not saying that LE has made a mistake; if they have DNA, that’s very good evidence. But let’s not pretend that everyone arrested is always guilty (or for that matter, that guilty people don’t get away with murder).