20/20 Investigates Toni Henthorn’s Fatal Fall: Daughter Speaks Out After 13 Years

20 20 Mountain of Lies Key Art

ABC’s 20/20 revisits a case shrouded in unanswered questions and unsettling coincidences, exploring the tragic death of Toni Henthorn, a successful ophthalmologist who fell 160 feet from a cliff in Rocky Mountain National Park. What initially appeared to be a freak accident during a 12th-anniversary hike with her husband, Harold, soon transformed into a complicated investigation, exposing a web of deception that left authorities questioning whether Toni’s death was truly accidental.

Nearly 13 years after the tragedy, Toni and Harold’s daughter, Haley Bertolet, breaks her silence in a deeply personal interview with 20/20. This marks Bertolet’s first public statement about the events surrounding her mother’s death, offering viewers a unique perspective on the emotional toll of the tragedy and her ongoing quest for truth.

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“GMA3” co-anchor Eva Pilgrim guides viewers through the case, exploring the inconsistencies that prompted a closer look by both the National Park Service and the FBI. The investigation into Toni’s fatal fall uncovered years of hidden truths and raised troubling questions about a possible second fatality linked to Harold Henthorn. As authorities dug deeper into Harold’s past, they discovered a pattern of suspicious incidents, raising red flags and casting a dark shadow over the circumstances of Toni’s demise.

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Airing Friday, February 28, 2025, from 9:01-11:00 p.m. EST on ABC, the episode will also be available for streaming the next day on Hulu.

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