Gone
Sep 17, 2026 · 41m
Summary
This 48 Hours episode investigates the 2012 disappearance of Houston mother Michelle Warner, who vanished after a violent argument with her estranged boyfriend, Mark Castellano. The story follows Castellano’s deceptive attempts to evade suspicion, including his appearance on the Dr. Phil show, before Houston homicide detectives break his alibi by framing his actions as protecting their toddler son. After confessing to strangling Michelle and burying her body in West Texas, Castellano later retracted his confession, claiming her death was an accident. The episode concludes with his convictio…
Topics discussed
Introduction: Michelle Warner's disappearance
The initial report and police investigation
Using Facetime to locate the body
Mark Castellano's appearance on Doctor Phil
Michelle's background and move to Houston
Michelle's past struggles and relationship with Mark
Living arrangements and the night she vanished
Mark's initial story and missing persons report
Police investigation and missing hard drives
Mark requests to appear on Doctor Phil
Doctor Phil's interview: The fight and disappearance
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Suspicion of foul play and police search
Interrogation: The missing hard drives and lies
Admissions of violence and Doctor Phil's conclusion
Police interrogation: Building trust and motive
The confession: Breaking her neck to protect Caden
Post-confession calls and body disposal details
Burial in West Texas and locating the grave
Finding the body via Facetime and arrest
Jailhouse interview: Mark's new 'accident' story
Analysis of Mark's psychology and motives
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Trial: Prosecution, defense, and surveillance video
Verdict and sentencing to 27 years
Family's reaction and aftermath
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