Sex, lies & video: Murderous Colorado dad Chris Watts & his mistress

The police interrogation recordings of the Colorado dad who murdered his pregnant wife and two young daughters -- while courting a mistress -- are now public, along with the detectives interview of the girlfriend. Nancy Grace takes a long look at the lies of Chris Watts in this extended Crime Stories episode. She is join by deception & body language expert Susan Constantine, private investigator Vincent Hill -- author of "Playbook to a Murder," Atlanta juvenile judge & lawyer Ashley Willcott, and CrimeOnline.com reporter Ellen Killoran.