Technology and luck: How cold cases are solved

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Some murder investigations last decades before any real progress is made. How do police discover new evidence when all leads have been exhausted? Subscribe to The Washington Post on YouTube: http://bit.ly/2qiJ4dy Follow us: Twitter: https://twitter.com/washingtonpost Instagram: https://www.instagram.com/washingtonpost/ Facebook: https://www.facebook.com/washingtonpost/

Published 2018-07-19 · Watch on YouTube ↗
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