John Agrue Biography, Age, Height, Wife, Net Worth and Family

At the time, he was still considered a suspect in Becker’s murder as well, but due to the lack of usable DNA in that case, they had to resort to other means of investigation to solve it. In May 2013, authorities announced that due to the similarity to Agrue’s other known murders and other evidence that placed him near the crime scene, he was considered the sole and most likely suspect in Becker’s murder. Because of this, Agrue was posthumously labeled a serial killer, with state police and the FBI announcing that they would be reviewing other cold cases to determine whether he’s responsible for any further violent crimes. As of July 2022, no other cases have been linked to Agrue.

On June 29, 2009, Agrue was found at his home in Joliet, from what an autopsy determined to be an accidental overdose of prescription medication. Whilst inspecting his home, relatives found women’s purses and jewellery in his home, as well as newspapers clippings about the attempted abduction and the murders of Becker and Smith. After his death, investigators from a cold case unit began testing his DNA to determine whether he was truly responsible for the murder of Smith decades prior. Almost a year later, his DNA was successfully matched to that of the Smith crime scene, with authorities announcing that they had officially solved the case.

In March 1983, Agrue was convicted of the attempted abduction and given a prison sentence, but was immediately returned to Illinois for parole violation. He remained behind bars until 1989, when he was paroled yet again. This time, he decided to remain in Joliet, where he lived for the remainder of his life. Since his last release from prison, Agrue has not been linked to any violent crimes, although one of his neighbors reported that he had bragged about the murders in private and exhibited other disturbing behavior. Because of this, she sought to have a restraining order issued against him, which was not granted on the grounds that Agrue had not harmed her personally.

In January 1982, Agrue was paroled and decided to move in with relatives in Colorado. He initially lived in Boulder before moving to Longmont. In late June 1982, he encountered 20-year-old Susan Becker somewhere in the vicinity of Boulder and proceeded to stab her 13 times in the chest, clavicle and neck. After killing her, he dumped the body in the Boulder Canyon, where it was found by fishermen on July 1. Whilst he was considered a suspect in her death, Agrue was not thoroughly investigated at the time and was eventually written off by investigators.

In December 1975, Agrue was transported to the University of Illinois Hospital in Chicago, where he was to undergo surgery to donate his kidney to his sister, Kathleen. For this occasion, about 50 prison employees volunteered to supervise him on their days off, as there were fears that he might use the opportunity to escape. The operation was delayed until May 4, and after its success, he was ordered to remain there until he could fully recuperate.

On July 21, 1966, Agrue met with his 15-year-old sister-in-law Suzanne “Susan” Marino in downtown Joliet, Illinois and asked her to accompany him to the nearby Hammel Woods forest reserve. When they arrived there, he started making romantic advances towards her, only to be promptly rejected. Angered, Agrue pulled out a small knife and stabbed her approximately a dozen times, killing Marino in the process. Later that day, he returned to his home and admitted the murder to his wife, who initially did not believe his claims. To prove his guilt, he drove her to the crime scene and showcased where he had left Marino’s purse and shoes.

John William Agrue (September 11, 1947 – June 29, 2009) was an American serial killer. Convicted of killing his sister-in-law in Illinois in 1966, he would later be paroled and moved to Colorado, where he committed at least two additional murders in 1982. He never stood trial for these latter crimes, and was identified as the killer posthumously via DNA profiling.