212. Piquerism
This week, we dive into a very specific sexual paraphilia, often associated with serial murder cases. We lay out the foundational research and see how it has been analyzed in case studies, dating back to the 1700's. We also discuss the London Monster, the Whitechapel Murders, and more recent cases, including whether or not we think piquerism fits with the Idaho 4 case.
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Keppel, Robert D, and William J Birnes. Serial Violence : Analysis of Modus Operandi and Signature Characteristics of Killers. Boca Raton, Fl, Crc Press, 2009.
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Keppel, Robert D., et al. “The Jack the Ripper Murders: Amodus Operandi and Signature Analysis of the 1888-1891 Whitechapel Murders.” Journal of Investigative Psychology and Offender Profiling, vol. 2, no. 1, Jan. 2005, pp. 1–21, www.fmhac.org/uploads/1/2/3/9/123913996/walter.pdf, https://doi.org/10.1002/jip.22.
Mohr, Jan Bondeson and Dennis. “THE LONDON MONSTER - Strand Magazine.” Strand Mag, 11 June 2020, strandmag.com/the-london-monster/. Accessed 29 July 2025.
Pettigrew, Mark. “Piquerism in Homicide: A Knife Wound Analysis of a Sexually Motivated Serial Killer.” Journal of Forensic Sciences, 4 Sept. 2021, https://doi.org/10.1111/1556-4029.14885.
---. “Piquerism in Overkill Homicides: Identifying the Sexual Component in a Series of “Ripper” Killings.” Journal of Police and Criminal Psychology, vol. 48, 6 Apr. 2022, pp. 342–352.
Public Pictures AI. “Dr Watson, the London Monster & Piquerism.” YouTube, 29 Apr. 2020, www.youtube.com/watch?v=mK90htdw0Fg. Accessed 29 July 2025.
R Von Krafft-Ebing. Psychopathia Sexualis : The Classic Study of Deviant Sex. New York, Arcade Pub./Skyhorse Pub, 2011.
Ressler, Robert K, and Tom Shachtman. Whoever Fights Monsters : My Twenty Years Hunting Serial Killers for the FBI. New York, St. Martin’s Press, 1992.
Roberts, Hannah. “Italy Opens Door to Chemical Castration for Rapists and Pedophiles.” POLITICO, 19 Sept. 2024, www.politico.eu/article/italy-giorgia-meloni-legalizing-chemical-castration-rapists-pedophiles-sex-offenders/. Accessed 29 July 2025.
Shon , Phillip C., and Dragan Milovanovic. Serial Killers: Understanding Lust Murder. Durham, North Carolina, Carolina Academic Press, 2006, pp. 113–122.
“Virginia “Butt Slasher” Sentenced to 7 Years in Prison.” NBC4 Washington, 6 Sept. 2013, www.nbcwashington.com/news/local/fairfax-county-butt-slasher-to-be-sentenced-friday/1924072/. Accessed 28 July 2025.