Familial DNA data from popular mail-order kits such as 23andMe and ancestry.com is helping investigators thaw years-old cold cases, but lawyers are not so sure about their validity. Such is the case of suspected murderer (and recently arrested) Steven Downs and the brutal murder of Sophie Sergie in Alaska in 1993.

Whatever happened to Michael Madden? The fun-loving innocent young man mysteriously disappeared while on a camping trip in Northern California in 1996, and his disappearance remains unsolved to this day. Did a strange passerby in the woods kill him, is he still alive living elsewhere under a different name, or is this a tragic suicide without a body? Unfortunately, we may never know...

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