Detectives Frank Falzon and Jack Cleary (AP)

Karen:

The "Paper Bag Killer"

Episode sources:

1. “The Super Sleuths” by Bruce Henderson and Sam Summerlin (Gassett News Service) 1977

2. “San Francisco Homicide Inspector 5-Henry-7: My Inside Story of the Night Stalker, City Hall Murders, Zebra Killings, Chinatown Gang Wars, and a City Under Siege” by Frank Falzon

3. “Psychiatrist’s son held as the ‘paper bag killer’” by Frank O’Mea (San Francisco Examiner) 1974

4. “Paper bag suspect was ‘righting wrong’ – attorney” (San Francisco Examiner) 1974

5. “Read About Frank Falzon’s Most Notorious Cases” (FrankFalzon.com)

6. “Psychiatrist’s Son Arrested for ‘Paper Bag’ Murders” (Oakland Tribune) 1974

7. “50 Things People Who Grew up in 1970s San Francisco Will Remember” by Amy Graff (SF Gate) 2019

8. “The Golden Dragon massacre: A bloody rampage in the heart of 1970s San Francisco” by Andrew Chamings (SFGate) 2021

9. “Defendant Said Victim of Fantasy” (Daily Independent Journal) 1974

10. “’Nob Hill rapist’ arrested” by Malcolm Glover (SFGate) 1995

11. “Police arrest man, 70, in Petaluma shooting” by Will Schmitt (The Press Democrat)

12. “Karl Hanson obituary” (Legacy.com)

13. “Why the 1970s in San Francisco were way better than you might think” by Greg Keraghosian (SFGate) 2018

14. “Harvey Milk” (Biography) 2021

15. “Jim Jones” (Wikipedia)

16. “Zebra Murders” (Wikipedia)

17. “Atascadero State Hospital” (Wikipedia)

Georgia:

The Dancing Plague of 1518

Episode sources:

1. “The Dancing Plague of 1518” by Ned Pennant-Rea (Public Domain Review)

2. “A Forgotten Plague: Making Sense of Dancing Mania” by John Waller (The Lancet) 

3. “Keep on moving: the bizarre dance epidemic of summer 1518” by John Waller (The Guardian)

4. “Why does Mass Hysteria Affect Mostly Women” by Regan Penaluna (Nautilus)

5. “Dancing Mania” (Wikipedia)

6. “The Dancing Plague of 1518” by Pat Bauer (Encyclopedia Britannica)

7. “The Epidemic of 1962 - Of Laughter” by Caroline Kamau (Psychology Today)

8. “What Happened to the Girls in Le Roy” by Susan Dominus (New York Times Magazine)

9. “The Curious Case of Teen Tics in Le Roy, New York” (All Things Considered, NPR)

10. “School baffled by 12 girls’ mystery symptoms” Today Show interview

11. “TikTok Tics are a Symptom of a Much Bigger Problem” by Eleanor Cummins (The Verge)

12. “Is TikTok Causing Tics in Teen Girls?” (Cleveland Clinic)

13. “The People Who Danced Themselves to Death” by Rosalind Jana (BBC)

14. “The Devil in the Dance” by Lyn Gardner (The Guardian)

15. “The Dancing Plague of the Middle Ages” by Martina Petkova (Medium)

16. “Divine Punishment or Disease? Medieval and Early Modern Approaches to the 1518 Strasbourg Dancing Plague” by Lynneth J. Miller (Edinburgh University Press)

17. “The Mirror Neuron System May Play a Role in the Pathogenesis of Mass Hysteria” by Yao-Tung Lee and Shih-Jen Tsai (Elsevier)

18. “She more than he: gender bias supports the empathic nature of yawn contagion in Homo sapiens” by Ivan Norscia, Elisa Demuru and Elisabetta Palagi (Royal Society Open Science)

19. “The Red Shoes” (Wikipedia)

20. “Protestant Reformation” (Wikipedia)

21. “Holy Roman Empire” (Wikipedia)

22. “Tarte Flambée, or flammekeuche” (Wikipedia)

23. “Travel Guide to Alsace Wine region” (Wine Tourism)

Painting depiction of musicians accompanying people who are suffering from the dancing plague (Alamy)