In this episode, Payton explores a series of mysterious deaths occurring within hospitals. When autopsies reveal that patients have been poisoned by someone inside the facility, it triggers a full-scale police investigation.

Case Sources- 

WCPO Cincinnati - https://www.wcpo.com/news/crime/inmate-charged-in-cincinnati-angel-of-death-donald-harveys-fatal-prison-beating 

https://www.wcpo.com/news/local-news/her-dad-died-at-the-hands-of-a-serial-killer-in-cincinnati-now-she-wants-others-to-learn-more-about-his-life 

Fox 19 - https://www.fox19.com/2019/09/24/he-just-liked-killing-donald-harvey-convicted-murders/ 

Cardinal Scholar - https://cardinalscholar.bsu.edu/server/api/core/bitstreams/6e1ddae6-7792-47b0-8928-70e40a513539/content  

Kentucky Historical Institutions - https://kyhi.org/2021/03/04/the-marymount-hospital-serial-killer/ 

Crime Library - https://www.crimelibrary.org/serial_killers/weird/donald_harvey/1.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/2.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/3.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/4.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/5.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/6.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/7n.html 

https://www.crimelibrary.org/serial_killers/weird/donald_harvey/8.html 

Time Magazine - https://time.com/archive/6710121/lethal-doses-police-probe-34-deaths/

The News Journal - https://www.thenewsjournal.net/whitley-knox-native-gets-life-in-prison-for-killing-angel-of-death-serial-murderer/#google_vignette 

Oxygen - https://www.oxygen.com/license-to-kill/season-1/episode-5/videos/license-to-kill-bonus-donald-harvey-admits-to-murdering 

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