When a serial rapist struck Ann Arbor, Michigan, the police turned to drastic measures, based on the promise and power of DNA. For law enforcement, genetic testing seemed like a can’t-miss idea. But DNA didn’t fix anything in Ann Arbor. Instead, it ripped the community apart. This episode of One Year was produced by Evan Chung, Cheyna Roth, Madeline Ducharme, and Josh Levin. Mixing by Merritt Jacob. Slate Plus members get to hear more about the making of One Year. Get access to extra episodes, listen to the show without any ads, and support One Year by signing up for Slate Plus for just $1 right now. For a behind-the-scenes look into some of the articles we read when we create the show, check out our Pocket collection at http://getpocket.com/slate.  Learn more about your ad choices. Visit megaphone.fm/adchoices