"Dateline" will feature a two-hour episode on Friday at 9 p.m. on NBC4, investigating the disappearance of Colorado mother Kelsey Berreth, with interviews from lead investigators and family members.

KUSA – The disappearance and presumed death of Woodland Park mother Kelsey Berreth has generated attention from media outlets across the country. And now, Dateline will turn its attention to the man ...

Family members and the lead investigators who cracked the Kelsey Berreth case take us inside the investigation of the murder. Andrea Canning reports Friday, August 29 ...

Like many others across the country, Kelsey Berreth went to a grocery store on Thanksgiving Day of 2018. They were the last images that captured the 29-year-old alive. The investigation that followed ...

Frazee's mistress, Krystal Jean Lee Kenney, attempted to murder Berreth three times but couldn't go through with it Kenney ultimately testified against Frazee and walked authorities through the brutal ...

Kelsey Berreth disappeared on Thanksgiving Day in 2018 and was reported missing 10 days later Kelsey Berreth was murdered by her fiancé, Patrick Frazee, after he tried convincing his mistress to kill ...

Kelsey Berreth disappeared on Thanksgiving Day in 2018 and was reported missing 10 days later Kelsey Brunner/The Gazette via AP ; Colorado Department of Corrections Kelsey Berreth was murdered by her ...