EP180: Serial Killer Nun: Holy Hellhouse episode artwork

EPISODE · Apr 22, 2026 · 1H 11M

EP180: Serial Killer Nun: Holy Hellhouse

from Psychopedia · host Investigator Slater

Abbess Mariam, better known as “Mother Rasputin,”  has been described as one of the most prolific female serial killers in modern history.  She cloaked herself in the authority of a Greek Old Calendarist Orthodox abbess while running something far darker than a monastery. Between 1939 and 1950, she was found guilty of a staggering range of crimes, including multiple murders and fraud, but the charges barely capture the reality inside her compound in Keratea, Greece. Hundreds of people - mostly women - arrived there seeking refuge, faith, and safety, and instead found solitary confinement, empty plates, and discipline that escalated into ritualized cruelty. Mariam ruled with a mix of spiritual theater and calculated brutality, presenting herself as divinely guided while systematically breaking down (and killing) the very people who trusted her. Sadistic, controlling, and untethered from any moral boundary, she has been described as one of the most prolific female serial killers in modern history. FOLLOW AND SUBSCRIBE to Psychopedia wherever you are listening! Follow Investigator Slater on Instagram + TikTok: @investigatorslater  Join our Patreon family! (⁠www.Patreon.com/PsychopediaPod⁠) On Patreon, you get AD FREE episodes, exclusive true crime content, behind-the-scenes pics/vids, private group chats, and much more!  To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices

Abbess Mariam, better known as “Mother Rasputin,”  has been described as one of the most prolific female serial killers in modern history.  She cloaked herself in the authority of a Greek Old Calendarist Orthodox abbess while running something far darker than a monastery. Between 1939 and 1950, she was found guilty of a staggering range of crimes, including multiple murders and fraud, but the charges barely capture the reality inside her compound in Keratea, Greece. Hundreds of people - mostly women - arrived there seeking refuge, faith, and safety, and instead found solitary confinement, empty plates, and discipline that escalated into ritualized cruelty. Mariam ruled with a mix of spiritual theater and calculated brutality, presenting herself as divinely guided while systematically breaking down (and killing) the very people who trusted her. Sadistic, controlling, and untethered from any moral boundary, she has been described as one of the most prolific female serial killers in modern history. FOLLOW AND SUBSCRIBE to Psychopedia wherever you are listening! Follow Investigator Slater on Instagram + TikTok: @investigatorslater  Join our Patreon family! (⁠www.Patreon.com/PsychopediaPod⁠) On Patreon, you get AD FREE episodes, exclusive true crime content, behind-the-scenes pics/vids, private group chats, and much more!  To learn more about listener data and our privacy practices visit: https://www.audacyinc.com/privacy-policy Learn more about your ad choices. Visit https://podcastchoices.com/adchoices

NOW PLAYING

EP180: Serial Killer Nun: Holy Hellhouse

0:00 1:11:31

No transcript for this episode yet

We transcribe on demand. Request one and we'll notify you when it's ready — usually under 10 minutes.

No similar episodes found.

Frequently Asked Questions

How long is this episode of Psychopedia?

This episode is 1 hour and 11 minutes long.

When was this Psychopedia episode published?

This episode was published on April 22, 2026.

What is this episode about?

Abbess Mariam, better known as “Mother Rasputin,”  has been described as one of the most prolific female serial killers in modern history.  She cloaked herself in the authority of a Greek Old Calendarist Orthodox abbess while running something far...

Can I download this Psychopedia episode?

Yes, you can download this episode by clicking the download button on the episode player, or subscribe to the podcast in your preferred podcast app for automatic downloads.
URL copied to clipboard!