Secret Lover Helps Cover Up Boyfriend’s Crime After Fiancée’s Brutal Murder

Murder Files Unsealed · Sep 23, 2026 · 41m · transcript

This episode details the brutal 2018 murder of Colorado pilot Kelsey Berreth by her fiance, Patrick Frazee, during a Thanksgiving Day attack. Though Berreth initially seemed to have vanished, investigators used cell phone tower data and surveillance footage to debunk Frazee’s false timeline and link him to the crime. The case was blown open by Frazee's former lover, Krystal Lee, who confessed to cleaning the bloody crime scene and helping dispose of the victim's remains under duress. Lee’s testimony revealed a calculated plot involving failed assassination attempts and a final, fatal assault…