10/16/2026
Cleveland 19 News: Kirtland cult murders: Cult expert explains how control takes hold
​Decades after the tragic events surrounding the 1989 Kirtland cult murders, investigators and experts continue to examine the underlying psychological mechanisms that allowed self-proclaimed prophet Jeffrey Lundgren to exercise absolute control over his followers. The heinous crimes resulted in the deaths of Dennis Avery, his wife Cheryl, and their three young daughters, who were loyal members of Lundgren's splinter group. A special 19 Investigates documentary titled "Deadly Devotion: The Kirtland Cult Murders" delves into these historical events, bringing fresh perspective to how such an extreme dynamic could take root in ordinary communities.
​Cult expert Ashlen Hilliard featured in the coverage explain the step-by-step psychological processes of undue influence and manipulation. Rather than being an isolated phenomenon restricted to rare anomalies, the conditions that enable a charismatic leader to dominate vulnerable followers involve common human vulnerabilities, isolation tactics, and the systematic erosion of independent critical thinking. Members often surrender their autonomy gradually, caught up in promises of spiritual elevation or tight-knit community before recognizing the full extent of the psychological trap.
​The reporting underscores that understanding these historical crimes is essential for recognizing modern patterns of manipulation and high-control groups. By reviewing the actions of key followers and the chilling progression of the case, experts hope to educate the public on how ideological extremism can turn fatal. Authorities emphasize that the focus remains on honoring the victims and comprehending the warning signs of dangerous group dynamics.
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Ashlen Hilliard knows how these groups take hold, starting with excessive devotion.