Forensic Files

Episode 755: Dennis Nilsen - The Kindly Killer (Part 2)

Morbid | Podcast

  • Feb 9, 2026
  • 1:01:22
  • Full Episode

On the morning of February 8, 1983, a plumber working in London’s Muswell Hill neighbor opened a drainage cover behind a Cranley Gardens apartment building and made a horrific discovery—the drain was blocked by pieces of bone and human tissue. Upon investigation, detectives traced the blockage back to one apartment in the building, where additional evidence suggested things were far worse than they’d initially thought.

When the occupant of the apartment, Dennis Nilsen, was confronted with the human remains, he began telling investigators a shocking story and when he was finished, Nilsen had confessed to murdering and dismembering at fifteen men over the course of five years.

In the annals of British crime, Dennis Nilsen ranks among the worst serial killers the country has ever seen, not only because of the number of people he killed, but also the method of disposal and the motive.

Mentioned in the episode:

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Cowritten by Alaina Urquhart, Ash Kelley & Dave White (Since 10/2022) Produced & Edited by Mikie Sirois (Since 2023) Research by Dave White (Since 10/2022), Alaina Urquhart & Ash Kelley Listener Correspondence & Collaboration by Debra Lally Listener Tale Video Edited by Aidan McElman (Since 6/2025) Listener Tale Theme Music licensed from https://www.purple-planet.com Main Theme: Matti Paalanen — Trick or Treat — Provided by Jamendo Ad Music: Title: Artist: BlueJay Studio — Spooky Waltz — Provided by Jamendo

Brief Summary

Dennis Nilsen's chilling murders and interactions with victims reveal a disturbing pattern of manipulation and brutality.

Key points

  • The Importance of Hygiene. A reminder to wash hands during an outbreak.
  • Book Signing Update. More signed editions of The Butcher Legacy are available for pre-order.
  • Dennis Nielson's Dark Turn. Dennis Nielson's disturbing tendencies come to light as he lures victims.
  • Dennis's Dark Comfort. Dennis finds solace in Kenneth's body, showing signs of deepening psychosis.
  • The Tragic Encounter with Martin. Martin Duffy, a runaway, meets Dennis and becomes his next victim.
  • The Spiral of Violence. Dennis's killing spree continues as he becomes more emboldened after each murder.

Tension

75/ 100High tension

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