How the latest DNA technology led police to a suspected killer more than 45 years after a woman’s death. See how at-home DNA tests can even help catch perpetrators by tracing their family trees. Plus, the case using diabetes as a defense for a violent attack – can low blood sugar really cause someone to kill?

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.

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