Age, Biography and Wiki

Joseph E. Duncan III (Joseph Edward Duncan III) was born on 25 February, 1963 in Tacoma, Washington, United States, is an American serial killer on death row. Discover Joseph E. Duncan III's Biography, Age, Height, Physical Stats, Dating/Affairs, Family and career updates. Learn How rich is He in this year and how He spends money? Also learn how He earned most of networth at the age of 57 years old?

Popular As Joseph Edward Duncan III
Occupation N/A
Age 59 years old
Zodiac Sign Pisces
Born 25 February 1963
Birthday 25 February
Birthplace Tacoma, Washington, United States
Nationality United States

We recommend you to check the complete list of Famous People born on 25 February. He is a member of famous Killer with the age 59 years old group.

Joseph E. Duncan III Height, Weight & Measurements

At 59 years old, Joseph E. Duncan III height not available right now. We will update Joseph E. Duncan III's Height, weight, Body Measurements, Eye Color, Hair Color, Shoe & Dress size soon as possible.

Physical Status
Height Not Available
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Dating & Relationship status

He is currently single. He is not dating anyone. We don't have much information about He's past relationship and any previous engaged. According to our Database, He has no children.

Parents Not Available
Wife Not Available
Sibling Not Available
Children Not Available

Joseph E. Duncan III Net Worth

His net worth has been growing significantly in 2021-2022. So, how much is Joseph E. Duncan III worth at the age of 59 years old? Joseph E. Duncan III’s income source is mostly from being a successful Killer. He is from United States. We have estimated Joseph E. Duncan III's net worth , money, salary, income, and assets.

Net Worth in 2022 $1 Million - $5 Million
Salary in 2022 Under Review
Net Worth in 2021 Pending
Salary in 2021 Under Review
House Not Available
Cars Not Available
Source of Income Killer

Joseph E. Duncan III Social Network

Wikipedia Joseph E. Duncan III Wikipedia



On September 30, 2018, Shasta's father Steve Groene posted on the National "One Strike" Law for Slade and Dylan Groene Facebook page. In this post he stated that he and Shasta were being evicted from the house that was built for him and Shasta. According to him, Shasta tried convincing the trustees (Shasta Groene Charitable Trust) to call off the eviction but was unsuccessful in doing so.


On February 28, 2017, a Petition for Writ of Habeas Corpus was filed. On September 27, 2017, it was ordered that the Government's Third Motion for Extension of Time was granted in part and denied in part. The Government's response was due October 30, 2017. The Petitioner's reply was due on or before January 30, 2018.


In 2016, Shasta Groene (then 19 years old) started a petition called Slade and Dylan's law for her two brothers that were murdered by Duncan. In the petition description, she stated that convicted sex offenders not be let out of jail. This would effectively mean that the three strike rule for violent sex offenders be reduced to 1 strike. By the time the petition closed, it had 51,820 supporters.


A three-judge panel of the 9th Circuit U.S. Court of Appeals ruled on March 27, 2015, that a district judge correctly determined Duncan was mentally competent when he waived his right to appeal his death sentence. The U.S. Supreme Court on February 28, 2016, denied Duncan's petition to hear his appeal of a federal judge's ruling in December 2013, which had been affirmed by a three-judge panel of the 9th U.S. Circuit Court of Appeals in March 2015.


Shasta Groene grew to have a troubled history with law enforcement. In February 2014, Shasta was arrested and sent to juvenile detention for 12 months following a drug-related crime. She stated that the sentence saved her life, but in October 2017 she was accused of leaving methamphetamine where a 1-year-old could have access to it. In December 2017, she was charged with two misdemeanor charges to which she pleaded guilty in April 2018 and handed an 18-month unsupervised probation with withheld judgement. Upon successful completion of her probation, Shasta could petition to get the charges wiped from her record. A month into her probation however, she violated her probation and admitted the violation on June 21. Her probation sentence remained at 18 months, but it was changed to supervised probation.


As of September 2012, Duncan is incarcerated at the United States Penitentiary, Terre Haute in Indiana. On December 6, 2013, a federal judge ruled that Duncan was mentally competent when he gave up the right to appeal his death sentence. Psychiatrists working with the prosecution diagnosed Duncan with pedophilia, sadistic personality disorder and antisocial personality disorder with narcissistic traits, but maintained that he was legally sane.


In July 2011, the Ninth Circuit Court of Appeals reversed the district court's decision to permit Duncan to represent himself without first holding a hearing as to his competence to do so and remanded for a hearing as to this issue.

On March 15, 2011, Duncan pleaded guilty to Martinez's murder, and was sentenced to two life terms on April 5, 2011. As part of a plea deal, the sentence comes without the possibility of parole or right to appeal. Although Duncan could have faced a separate death sentence in addition to the ones he had already been sentenced to in federal court, Riverside County District Attorney Paul Zellerbach justified the life sentence by stating that he had consulted with the Martinez family who wanted closure in the case and that "the federal system will kill him long before the state of California would have seriously considered it."


Jury selection for the penalty phase for Duncan's federal trial began on April 14, 2008. During jury selection, Duncan dismissed his attorneys and chose to represent himself. His attorneys objected, asserting he was not competent to do so, and requested a formal hearing as to the issue. The district court ordered an evaluation of Duncan to determine his competence, and accepted the evaluator's conclusion that he was competent to proceed without counsel.

On August 27, 2008, after three hours of deliberation, the jury recommended the death penalty, and the judge imposed three death sentences for "kidnapping resulting in death, sexual exploitation of a child resulting in death, and use of a firearm in a violent crime resulting in death," all related to the death of Dylan Groene. On November 3, 2008, Duncan was sentenced to an additional three consecutive terms of life without parole in federal prison for kidnapping Shasta Groene and for sexually abusing Shasta and Dylan.


On January 18, 2007, Duncan was indicted by a federal grand jury in Coeur d'Alene on 10 counts of "kidnapping, kidnapping resulting in death, aggravated sexual abuse of a minor, and sexual exploitation of a child resulting in death," and other crimes related to illegal firearm possession and vehicle theft. He was arraigned the following day at a federal court in Boise, Idaho, where a judge ordered Duncan to stand trial the following March. Duncan's defense attorneys immediately requested a postponement, which was granted the week the trial was originally scheduled to begin; a new trial date was set for January 22, 2008.

On December 3, 2007, Duncan pleaded guilty to all 10 charges against him. As a condition of the agreement, Shasta Groene would not have to testify in the penalty phase of the trial. Due to a gag order, other details of the plea agreement were not released.

On January 18, 2007, the same day Duncan was indicted in federal court, Riverside County officials announced that Duncan was charged with Martinez's murder. Despite attempts by Riverside County officials to extradite Duncan to California, including an appeal by Governor Arnold Schwarzenegger, Duncan's federal trial proceeded. He was eventually extradited to California on January 24, 2009, five months after being sentenced to death by the federal court.

On April 3, 2007, the community effort to build a house for Shasta reached a milestone with more than 50 people attending the groundbreaking ceremony at the site of Shasta Groene's future home. Midge Smock, owner and Foundation Board member of Windermere Coeur d'Alene Reality told attendees that the project was on phase two and that they still had to pay for the lot. Supporters raised about $50,000 and needed to raise another $85,000 to cover the cost of the lot, property taxes and building permits. The house was to be held in a trust for Shasta until she turned 25.


On October 16, 2006, shortly after jury selection began, Kootenai County prosecutors and Duncan's attorney reached a plea bargain in which Duncan pleaded guilty to all state charges against him. He was immediately sentenced to three consecutive life sentences without the possibility of parole for the three kidnapping charges. Sentencing on the three murder charges was continued pending the outcome of his federal trial on kidnapping and murder charges; the judge said that if he did not receive the death penalty on the federal charges, he would return to Kootenai County for a death penalty phase on the state murder charges. Over two years later, after being sentenced to death on federal charges, Kootenai County sentenced Duncan to three additional life sentences. Duncan also agreed to cooperate with Kootenai County sheriff's detectives investigating his crimes and provide passwords to encrypted files stored on his computer.


In May 2005, Kootenai County, Idaho, authorities discovered the bodies of Brenda Groene, her boyfriend, and her 13-year-old son in the family home near Coeur d'Alene. Authorities also noted that Groene's two other children were missing: Shasta, 8, and Dylan, 9. After an intense search for the two children, Shasta was found alive with Duncan at a restaurant in Coeur d'Alene nearly seven weeks later, and Duncan was arrested in conjunction with her kidnapping. When the authorities rescued Shasta, she told them that Duncan said that he was bringing her back to her father because Duncan had changed his mind about killing her. She said that Duncan stated that she taught him how to love. Dylan's remains were found days later in a remote area near St. Regis, Montana. Duncan was subsequently charged with murdering Dylan as well as the three victims at the Coeur d'Alene home.

On May 16, 2005, authorities discovered the bodies of Brenda Groene, 40; her boyfriend, Mark McKenzie, 37; and her son, Slade Groene, 13, in their home along Lake Coeur d'Alene, outside the city of Coeur d'Alene. Two of Brenda Groene's other children, Dylan, 9, and Shasta, 8, were missing. An AMBER Alert was issued and searchers combed the area for the missing children while authorities investigated the deaths at the home as homicides. Autopsies determined the cause of death to be "blunt trauma to the head"; authorities also noted that the victims had been bound.

Seven weeks later, in the early morning hours of July 2, 2005, Shasta Groene was seen at a Denny's restaurant in Coeur d'Alene in the company of an unknown man. A waitress, manager, and two customers at the restaurant recognized Shasta from media reports. They surreptitiously called police and positioned themselves to prevent the man from leaving. Police officers arrived at the restaurant and arrested the man, later identified as Duncan, without incident. Shasta Groene identified herself to a waitress at the restaurant and to authorities, and was taken to Kootenai Medical Center for medical treatment and to be reunited with her father. Coeur d'Alene police, meanwhile, detained Duncan on kidnapping charges and on his outstanding federal warrant.

On July 4, 2005, investigators found human remains at a remote makeshift campsite in the Lolo National Forest near St. Regis, Montana. The remains were sent to the FBI lab in Quantico, Virginia for DNA testing and were positively identified as those of Dylan Groene. During the trial it emerged that Duncan shot Dylan Groene at point-blank range by holding a sawed-off 12-gauge shotgun to his head.

Shasta also told investigators how Dylan was murdered. Duncan insisted that Dylan's death was an accident. Initially, Shasta was standing on the other side of Duncan's Jeep when she heard a loud boom. She then ran to the other side of the Jeep where she saw Dylan lying on the ground screaming. Duncan was apparently digging through a clear plastic box looking for beer, when a shotgun that was also kept in the box went off, hitting Dylan in the stomach. Shasta said that she then saw Duncan put the shotgun to Dylan's head and pull the trigger, but it failed to go off. While Dylan begged Duncan not to kill him, Duncan reloaded the shotgun, put it back to the boy's head and pulled the trigger; Dylan was killed instantly. According to Shasta, immediately after killing Dylan, Duncan started crying and told her that he only killed him to put him out of his misery. A public memorial service was held for Dylan on July 16, 2005, which would have been his 10th birthday. It was held in Building 2 of Real Life Ministries, 1866 N Cecil Rd, Post Falls, ID 83854, USA.

In July 2005, bloggers noticed similarities between Duncan and the composite sketch in the Martinez case, as well as between Duncan's vehicle and the one Martinez's assailant was driving. The FBI and National Center for Missing and Exploited Children became involved, and in turn contacted Riverside County authorities. Riverside authorities were able to match the fingerprint taken from Martinez's body to Duncan, and on August 3 the Riverside County Sheriff officially announced Duncan's connection with the Martinez case.

Duncan first appeared in a Kootenai County court on July 13, 2005, where he was charged with three counts of first-degree murder and three counts of first degree kidnapping, all in conjunction with the deaths of Brenda and Slade Groene and Mark McKenzie. Kootenai County prosecutors had initially planned to charge Duncan with the kidnappings of Shasta and Dylan Groene; however, they deferred those charges to the federal courts, as transporting children across state lines for the purpose of sexual exploitation is a federal offense. Trial was set to begin on January 17, 2006, but was delayed until April 4, after the district judge granted a request to the defense for more time to prepare for the trial, and then again to October 26, after the judge in the case stated that "No one wants to try this case twice, including me." Duncan's attorneys blamed the multiple postponements on the prosecution's insistence on pursuing the death penalty.


In March 2005, Duncan was charged with the July 3, 2004 molestation of two boys at a playground in Detroit Lakes, Minnesota. On April 5, 2005, he appeared before a Becker County judge, who set bail at US$15,000. A Fargo businessman with whom Duncan had become acquainted helped him post bail; however, Duncan skipped bail and disappeared. On June 1, 2005, a federal warrant was issued for Duncan's arrest on the charge of "unlawful flight to avoid prosecution."


In 1980, also in Tacoma, Duncan stole a number of guns from a neighbor and then abducted a 14-year-old boy and raped him at gunpoint. Duncan was sentenced to 20 years in prison for this crime, but was released on parole in 1994 after serving 14 years. While out on parole, Duncan is known to have lived in several places in the Seattle area. He was arrested again in 1996 — this time for marijuana use — and released on parole several weeks later with new restrictions. Authorities believe that during his parole Duncan murdered Sammiejo White and Carmen Cubias in Seattle in 1996 and Anthony Martinez in Riverside County, California in 1997; however, both those cases went cold and were not tied to Duncan until after his arrest in the Groene case. Duncan was arrested in Kansas and returned to prison in 1997 after violating the terms of his parole; he was released from prison on July 14, 2000 with time off for good behavior and moved to Fargo, North Dakota.


On April 4, 1997, 10-year-old Anthony Michael Martinez was playing with friends in the front yard of his home in Beaumont, California, when an unknown man approached the group asking for help finding a missing cat. When the boys refused, the man grabbed Martinez at knifepoint and threw him into his vehicle. After a two-week search, Martinez's body was found nude and partially decomposed in Indio, California, on April 19, 1997. Investigators noted that he had been sexually assaulted and bound with duct tape. Although a composite sketch of the suspect was made available and a partial fingerprint taken from the duct tape found on Martinez's body, the case eventually went cold.


Federal prosecutors also revealed that Duncan confessed to the murders of Sammiejo White, 11, and her sister, Carmen Cubias, 9, who vanished on July 6, 1996, after leaving the Crest Motel in Seattle to panhandle. Their remains were found on February 10, 1998, in Bothell, Washington.


During his incarceration, authorities connected Duncan with the unsolved murders of Anthony Martinez in California and two girls in Seattle, which all occurred during Duncan's parole from 1994–1997. Of those murders, Duncan has only been charged in the California case. In all, Duncan has been convicted in Idaho for kidnapping and murdering the three victims in Coeur d'Alene, for which he was given six life sentences; in federal court for kidnapping Shasta and Dylan Groene and murdering Dylan, for which he was given three death sentences and three life sentences; and in the state of California for kidnapping and murdering Martinez, for which he was given two life sentences.

Duncan's arrest led the FBI to launch a nationwide review of unsolved missing child cases. He was implicated as a possible suspect in several crimes that occurred between 1994 and 1997, when he was on parole, and between 2000 and 2005, when he was free from prison. Although he was cleared as a suspect in some cases, authorities in California and Washington had enough evidence to believe Duncan had committed unsolved murders in their jurisdictions.


Born in Tacoma, Washington, Duncan's criminal history dates to when he was 15 years old. In 1980, he was sentenced to 20 years in prison for sexually assaulting a boy in Tacoma and as a result has spent all but six years of his adult life in prison. He was paroled in 1994 but was returned to prison in 1997 for violating the terms of his parole.


Duncan has a long history as a violent sexual predator. He committed his first recorded sex crime in 1978 in his hometown of Tacoma, Washington, when he was 15 years old. In that incident, he raped a nine-year-old boy at gunpoint. The following year, he was arrested driving a stolen car. He was sentenced as a juvenile and sent to Dyslin's Boys' ranch in Tacoma, where, according to a report by the Associated Press, he told a therapist who was assigned to his case that he had bound and sexually assaulted six boys. He also told the therapist that he estimated that he had raped 13 younger boys by the time he was 16.


Joseph Edward Duncan III (born February 25, 1963) is an American convicted serial killer and child molester who is on death row in federal prison in conjunction with the 2005 kidnappings and murders of members of the Groene family of Coeur d'Alene, Idaho. He is also serving 11 consecutive sentences of life without parole in conjunction with the same crimes as well as the 1997 murder of Anthony Martinez of Beaumont, California. Additionally, Duncan has confessed to — but has not been charged with — the 1996 murder of two girls in Seattle. At the time of the attack on the Groene family, Duncan was on the run from a child molestation charge in Minnesota. He spotted Shasta and Dylan Groene playing outside as he drove past their house on Interstate 90.


Shasta, now 21, was living in the Boise area and her father Steve was served an eviction notice. The managers of the trust stated that their obligation is to Shasta and not to her father. Ownership of the house is to revert to Shasta on her 25th birthday when the trust expires, unless the trust sells the property before then. One of the trustees, Midge Smock stated that the trust needs to sell the house in order to continue supporting Shasta while she lives in Nampa, near Boise.