Plot Synopsis

DEADLY DENTISTS is a one-hour docuseries that tells the true stories of dentists involved in murder. These stories of murder feature rotten characters in an industry full of money and meds, where corruption is commonplace. It's hard to distinguish those who are honorable from the deeply distrustful when every smile is full of pearly whites. Each one-hour episode features a different dentist, including: Dr. John Yelenic, whose neighbor found him murdered, revealing the darkness of this dentist's life; Dr. Roman Rezanowicz, who suffered from mental issues that caused his wife Kelli to crack and kill herself -- or was it something sinister; and Dr. Glennon Engleman, who was surrounded by violence -- his assistant's husband dies in a hunting accident and an associate is killed by a car bomb -- leading to the dentist being surrounded by a police investigation.
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On Friday, December 8, 2017 at 9pm ET/PT, Investigation Discovery premiered "Concealed Abscess," the season finale of DEADLY DENTISTS. Dr. Glenn Engleman has been caring for his South St. Louis neighbors for decades, even though crime is increasing in the area. When several people close to him are killed, detectives soon discover there's more going on in his world than it seemed.