It was a classic research case, laid out to millions of psychology students worldwide: the spectacle of Genain quadruplets, four genetically identical siblings who all suffered from various aspects of psychosis.

Now, decades after they first became a sensation, a new book peels back the public-facing layers to reveal a dark and disturbing story that makes us question everything we thought we knew about these four women.

Today we sit down with Audrey Clare Farley, author of "Girls and Their Monsters: The Genain Quadruplets and the Making of Madness In America," for a look behind the curtain.

Explore more about the book and Audrey's work here.

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Here's more on Dr. Andrea Bonior and her book Detox Your Thoughts.

Here's more on this podcast, which somehow you already found (thank you!)

Credits: Beautiful cover art by Danielle Merity, exquisitely lounge-y original music by Jordan Cooper