One Twin Committed the Crime — But Which One? A New DNA Test Can Finger the Culprit

One night in November 1999, a 26-year-old woman was raped in a parking lot in Grand Rapids, Mich. Police officers managed to get the perpetrator’s DNA from a semen sample, but it matched no one in their databases.

Detectives found no fingerprints at the scene and located no witnesses. The woman, who had been attacked from behind, could not offer a description. It looked like the rapist would never be found.

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