Derek Percy

Demographic Info

AKAVictimsSexEthnicityCountryTypeMotivationBirthDeath
Convicted of 1; Suspected 8 moreMaleCaucasianAustraliaTerritorialUnknown1948/09/15 (Sydney, Australia)n/a

Bibliography

TitleAuthorSources
Derek Percy: Australian PsychoAlan WhitickerAmazon, Kindle eBook
Lambs to the Slaughter: Inside the Depraved Mind of Child-Killer Derek Ernest PercyDebi MarshallAmazon, Kindle eBook
Derek Ernest Percy was imprisoned for murdering Yvonne Elizabeth Tuohy on a Victorian beach in July 1969. Declared not guilty by reason of insanity, he remains imprisoned because he is considered too dangerous to be released. He is suspected in the abduction of the three Beaumont children on January 26, 1966.

Blog Posts

Derek Percy Takes Secrets to the Grave

on July 25th, 2013 in Alleged Serial Killers by | 5 Comments

Derek Percy, known murderer of one child and suspected murderer of several more, died Wednesday of lung cancer in the secure ward of a Melbourne, Australia hospital. Many investigators believe Percy was responsible for seven year old Linda Stilwell’s death. Linda disappeared from St. Kilda Beach in 1968. Percy denied…

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Derek Percy Could be Forced to Give Testimony

on December 20th, 2012 in Alleged Serial Killers by | No Comments

The Victorian Court of Appeal ruled earlier today that a certificate of immunity should be offered to suspected serial killer Derek Percy to compel his testimony regarding the 1968 disappearance of seven-year-old Linda Stilwell. Linda’s mother, Jean Priest, has been fighting to have Percy testify for years. Today’s ruling will…

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Episode 051: The Serial Killer Cycle, Part 1

on October 21st, 2011 in Podcast Episodes, Psychology, Serial Killers by | 7 Comments

This week, we look at the serial killer cycle, a theory proposed by Joel Norris in 1988. While the theory is rather lacking in scientific testing, it ties in well with the concept of serial murder as addictive behavior, a concept I believe has considerable merit. Dr. Norris’ “Phases of…

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New Witness Connects Derek Percy to Simon Brooks

on October 1st, 2011 in Serial Killers by | No Comments

A witness has come forward that implicates Derek Percy in the 1968 murder of toddler Simon Brook, in Glebe, Australia. Percy has long been a suspect in the matter. The witness, who has not been named, was ten years old and living in an orphanage next to the building site…

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Review: 48 Hours: “Name, Rank and Serial Killer”

on April 10th, 2011 in Serial Killers, Video Reviews by | No Comments

Colonel David Russell Williams was a decorated pilot in the Canadian Air Force, who had flown Queen Elizabeth II. Colonel Williams was base commander for Canadian Forces Base Trenton, the largest air base in the country. Colonel Williams was an avid photographer, runner, and angler. Colonel Williams was happily married….

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State Will Cover Costs of Derek Percy Inquest

on April 5th, 2011 in Serial Killers by | No Comments

Jean Priest will not have to cover Derek Percy’s legal costs in her continuing attempts to compel him to give evidence in her daughter’s disappearance. Previous rulings had levied bills of over $80,000, and she was close to bankruptcy. A barrister of the Victorian Attorney-General said this week that the…

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Episode 022: Mutilation, Part 1

on March 25th, 2011 in Podcast Episodes, Serial Killers, Victimology by | 4 Comments

Listener Lalith asks: “What is the significance of mutilation pre and post death? Why do some killers mutilate the face while others only the genitalia?” She actually asked this question intending it to be part of last week’s Questions and Answers episode, but I thought it was meaty enough for…

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Derek Percy May be Forced to Testify

on March 4th, 2011 in Law Enforcement, Serial Killers by | No Comments

When Derek Percy, a convicted child killer, hit Jean Priest with a $48,000 legal bill, it looked like the inquiry into Linda Stilwell’s disappearance might be over. Linda, Jean’s daughter, disappeared from the St. Kilda area in 1968. Percy has been shown to be in the area that day. When…

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Episode 015: Derek Ernest Percy, Part 2

on February 4th, 2011 in Podcast Episodes, Serial Killers, Unsubs by | 8 Comments

Last week, we began looking at Derek Ernest Percy, whose sadistic fantasies resulted in the abduction and horrific murder of 12-year-old Yvonne Tuohy. A witness to the abduction, Shane Spiller, leads police to Percy later that afternoon. After a few hours of interrogation, Percy confesses to killing Yvonne, and leads…

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Episode 014: Derek Ernest Percy, Part 1

on January 28th, 2011 in Podcast Episodes, Serial Killers by | 4 Comments

July 20, 1969 – Warneet, Westernport Bay, Victoria, Australia, about 45 minutes outside Melbourne. 11-year-old Shane Spiller is going to Ski Beach with his friend, 12-year-old Yvonne Tuohy. Shane thinks Yvonne is ok for a girl. She is kind of a tomboy, and doesn’t ever want to play with dolls….

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