Deadly Exposure
- Jun 22, 2021
- 41:06
- Full Episode
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Accidental carbon monoxide poisoning is the cause for hundreds of American deaths every year, but according to police in Lima, Ohio, one of those deaths wasn’t an accident – in this Dateline classic, they say it was murder. Kate Snow reports. Originally aired on NBC on June 24, 2011.
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Brief Summary
Kathy Wangler's death led to her husband Mark's conviction for murder after suspicions arose about his involvement in her carbon monoxide poisoning.
Key points
- A Tragic Loss. Kathy Wangler, a beloved wife and mother, dies from carbon monoxide poisoning.
- Growing Suspicion. As investigators probe Kathy's death, suspicions arise about her husband Mark.
- The Investigation Deepens. Detectives uncover troubling details about Mark and Kathy's marriage.
- A Dark Discovery. Mark's journals reveal a troubled mind and a marriage in turmoil.
- The 911 Call. Mark's 911 call raises suspicion about his actions during the emergency.
- The Cold Case. Kathy's body was found cold, raising questions about the timeline of her death.
Episode highlights
- Growing SuspicionAs investigators probe Kathy's death, suspicions arise about her husband Mark.“You don't think this is an accident? No.”0:22Jun 22, 2021
- The Investigation DeepensDetectives uncover troubling details about Mark and Kathy's marriage.“The Wangler marriage was a disaster.”13:38Jun 22, 2021
- A Dark DiscoveryMark's journals reveal a troubled mind and a marriage in turmoil.“Thoughts of suicide are a little strong again.”22:57Jun 22, 2021
- The 911 CallMark's 911 call raises suspicion about his actions during the emergency.“It just didn't sound like he was doing CPR on the 911 call.”23:48Jun 22, 2021
- The Cold CaseKathy's body was found cold, raising questions about the timeline of her death.“Odd, since Mark told 911 her heart stopped beating only minutes before.”24:18Jun 22, 2021
- The Water Heater TheoryThe prosecution suggested the water heater was the source of carbon monoxide poisoning.“It either had to be the water heater or it was murder.”25:33Jun 22, 2021
- The Defense's ArgumentThe defense argued that Kathy's death was an accident, not murder.“Mark Wangler's defense came down to this. His wife died in a horrible accident.”28:40Jun 22, 2021
- The VerdictMark Wangler was found guilty of aggravated murder, sentenced to life in prison.“We, the jury, being duly impaneled and sworn, find the defendant, Mark A. Wangler, guilty of aggravated murder.”38:01Jun 22, 2021
Tension
85/ 100High tension
