
This episode covers the investigation of suspected serial killer Felix Vail, featuring private investigator Gina Frenzel. Topics include Vail's past relationships, his suspected victims, and the challenges of confronting a potential murderer.
Gina Frenzel discusses her work as a private investigator in Texas, detailing her typical cases and her interest in cold cases. She explains how she became involved in the Felix Vail case after reading a book about him and discovering he lived nearby.
Frenzel recounts her first encounter with Vail, describing the nervousness of confronting a suspected killer. She details her strategy for engaging him in conversation under the pretense of investigating a fire on his property.
During her second visit, Frenzel spent six hours with Vail, probing into his past relationships and the disappearances of his wives and girlfriends. She highlights the psychological tension of being alone with a suspected murderer.
Frenzel presents her theories on Vail's motivations for murder, including financial gain and jealousy, and discusses the evidence surrounding the disappearances of his wives, including Annette Craverville and Sharon Hensley.
Private investigator Gina Frenzel discusses confronting suspected serial killer Felix Vail and his dark past involving multiple missing women.

This episode stands out for the following:
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