Psychopedia: True Crime & Criminal Psychology Podcast By Investigator Slater cover art

Psychopedia: True Crime & Criminal Psychology

Psychopedia: True Crime & Criminal Psychology

By: Investigator Slater
Listen for free

Psychopedia is a captivating true crime podcast hosted by Investigator Slater, where she passionately takes you deep into the darkest recesses of the human psyche each week. A professional investigator by day, Slater uses her investigative expertise to uncover the chilling, hidden details behind each true crime case presented. Even if you think you’ve heard about a particular case before, prepare for a fresh, eye-opening perspective that dives deeper into the facts, psychology, criminology, and the dark truths you never knew. Every episode is presented with the utmost respect for the victims, while keeping you hooked with pop quizzes designed to engage and entertain (and give you a glimpse into Slater's own twisted mind). Prepare for a truly immersive experience—because this is true crime like you've never heard it before. Instagram + TikTok: @psychopediapod @investigatorslater. A podcast in partnership with Audacy.All Rights Reserved. Biographies & Memoirs True Crime
Episodes
  • EP180: Serial Killer Nun: Holy Hellhouse

    EP180: Serial Killer Nun: Holy Hellhouse
    Apr 22 2026
    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
    Show more Show less
    1 hr and 12 mins
  • EP179: Meet Me. Hurt Me. Kill Me.

    EP179: Meet Me. Hurt Me. Kill Me.
    Apr 15 2026
    TRIGGER WARNING: This episode contains discussions of suicide and may be distressing to hear. Please listen with caution. In the tragic and recent case of Sonia Exelby, a vulnerable woman in the UK went online to arrange for her own death. Sadly, she connected with a sadistic man in the U.S. named Dwain Hall, who framed her murder as mercy while investigators uncovered evidence of manipulation, coercion, internet predation, and calculated cruelty. Sonia was struggling, emotionally and psychologically, and Dwain positioned himself as a "mentor" who truly understood her pain. But text messages, recordings, and witness testimony painted a different picture: he was a predator who isolated Sonia from support systems, reinforced her belief that death was the only option, and meticulously documented her "consent" as insurance against exactly this kind of investigation. What Dwain called mercy, prosecutors called premeditated murder. This complex case is truly heartbreaking - please listen with caution! 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
    Show more Show less
    1 hr and 2 mins
  • EP178: Burned, Not Silenced: The Woman Who Testified From Beyond the Grave

    EP178: Burned, Not Silenced: The Woman Who Testified From Beyond the Grave
    Apr 8 2026
    This is the extraordinary case of Judy Malinowski, the first person in American history to testify from beyond the grave at her own murder trial. In 2017, Judy's life was shattered when her boyfriend doused her in gasoline and set her on fire. She was left to endure nearly two years of relentless pain, dozens of surgeries, and the heartbreak of not being able to raise her two children. Determined to be heard and to advocate on behalf of other survivors/victims, Judy worked with prosecutors to record her testimony from her hospital bed - forever preserving her voice, her memory, and her account of what happened. After her death, that testimony was played in court, allowing her to confront her killer and help secure his conviction in a way that had never been done before. This episode traces Judy's unbelievable fight for justice, the legal impact of her groundbreaking case, and the strength of a woman who ensured that her own words would be used to help bring down the man who killed her. 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
    Show more Show less
    1 hr and 1 min
All stars
Most relevant
Tank and Investigator Slater deliver engrossing stories with enough humor and everyman fascination to rope us all in. Slater has great, insightful information, and Tank says what we're all thinking feeling! Thanks, and keep it up.

This podcast delivers for true crime fans

Something went wrong. Please try again in a few minutes.
Absolutely binge worthy. I love this podcast. I'm an avid true crime fanatic. Normally, I would have to take breaks from the constant "doom & gloom". However, Tank brings his well informed levity while Investigator Slayer drops her wicked case bombs with her intellectually vicious rhetoric. The combination is refreshing. entertaining and hilarious. It means I NEVER have to stop listening. EVER. Keep it up. You guys ring my bell every time!

Feed me. F*ck me. Psychopedia me.

Something went wrong. Please try again in a few minutes.
I love Slaters view on life. I don’t feel like the only alien on earth. I like to yell out my answers to the pq’s. Slater gets me through long work shifts.

Slayyyyyyyter is the best storyteller

Something went wrong. Please try again in a few minutes.
Tank and Investigator Slater are a dynamic duo!! They bring true crime alive with some laughter shoved in there!!! I listen to them every morning on the way to work!!! Love them both!!!

The best true crime podcast out there!!!!

Something went wrong. Please try again in a few minutes.
A friend recommended this podcast to me a few weeks ago...finally decided to listen on my 1hr commute home at 2am in the morning. Rocked my socks! Perfect mix of "Haha" and "Oh, shit!" Love that they cover the grit of the cases. Brooke and Tanks chemistry and history between one another is awesome and genuine! Racing to get through more episodes.

Love it already

Something went wrong. Please try again in a few minutes.
See more reviews