Investigators made a public appeal for the fiance’ of missing Colorado mother Kelsey Berreth to sit down for a police interview, although they are not calling Patrick Frazee a suspect. The FBI helped Woodland Park, Colorado, police scour Frazee’s 35-area ranch for any clues in the 29-year-old’s disappearance.

Nancy Grace explores the evidence with Atlanta juvenile judge & lawyer Ashley Willcott, Vincent Hill — private investigator, author of “Playbook to a Murder,” New York psychologist Caryn Stark, and CrimeOnline reporter Ellen Killoran.

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No sign of missing Colorado mom as police end search of fiance’s property

“Crime Stories with Nancy Grace” is also a national radio show heard on SiriusXM channel 111 airing for two hours daily starting at 12 p.m. ET and around the country on local radio stations. You can also subscribe and download the daily podcasts at Apple Podcasts and Google Play.

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[Feature Photo: Kelsey Berreth/Handout]