Hinterkaifeck farmhouse

Photo: Andreas Biegleder on Wikipedia 

From the left: Unknown, Cäzilia Gruber, Viktoria Gabriel and Kreszenz Rieger holding Josef

Aerial view of the area surrounding Hinterkaifeck

DarkIdeas.net

Hinterkaifeck Memorial

Photo: Andreas Keller on Wikipedia

Karen:

The Hinterkaifeck murders

Episode sources:

1. Casefile Podcast - Case 124 Hinterkaifeck - Research & Writing by Erin Munro

2. DarkIdeas.net article “The Hinterkaifeck Murders: Horror on a Bavarian Farm”

3. Wikipedia Hinterkaifeck murders

4. “The Murder Case of Hinterkaifeck” by Hans Richter

5. Mental Floss article “The Chilling Story of the Hinterkaifeck Killings, Germany's Most Famous Unsolved Crime” by Sonya Vatomsky

6. Tales of Luminol - “The Hinterkaifeck Murders”, by Nici

7. All That’s Interesting article “The Gruesome Tale Of The Unsolved Hinterkaifeck Murders” by Katie Serena

Georgia:

The history of the lie detector

Episode sources:

1. Science Museum in London

2. American Psychological Association article “The Truth About Lie Detectors (aka Polygraph Tests)”

3. Law Info article “Are Lie Detector Tests Admissible in Court?” by Christina Majaski

4. “Betrayal” by Tim Weiner

5. AntiPolygraph.org blog

6. The National Registry of Exonerations - Emmanuel Mervilus

7. The National Registry of Exonerations - Gary Gauger

8. The Journal of Forensic Psychiatry and Psychology “Lie Detection and the Polygraph: a Historical Review” by Don Grubin and Lars Madsen

William Moulton Marston and Elizabeth Holloway Marston, 1916

Moulton “Pete” Marston

Leonarde Keeler (standing) testing his lie-detector on Dr. Kohler, 1937

Photo: Agence de Presse Meurisse / Bibliothèque nationale de France

Mackenzie-Lewis polygraph, London, England, 1919-1926

Science Museum, London