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Friday, Aug. 6: Tangled Lives

A mother's chilling premonition comes true when she is murdered by a stranger at the door. Another mother knows information that could help catch the killer. Will she risk everything to tell it? Chris Hansen reports. ‬Airs Friday, 9 p.m./8 C on Dateline NBC.

Check out his video blog taken while filming the report (a little bit of behind the scenes)