Gabriel K. Cook, a 32-year-old male from Peoria, Illinois, was reported missing on March 8, 2021. His disappearance sparked an extensive investigation that ultimately led to the conviction of Allen K. Schimmelpfennig for Cook's murder. Cook's remains were discovered in rural Peoria County more than three years after his disappearance. The Peoria County Coroner confirmed that Cook died from a gunshot wound to the head, and his death was likely instantaneous.
Items on Cook's body, including the serial number on an orthopedic device, were used to identify his remains.
The investigation into Cook's disappearance began when his family filed a missing persons report with the Peoria County Sheriff's Department on the morning of March 8, 2021. Later that day, deputies responded to a vehicle fire on Kickapoo Creek Road, where they discovered a Jeep belonging to Cook's grandmother, which Cook primarily used. Witnesses reported seeing Cook and Schimmelpfennig together earlier that day, loading a motorbike into the Jeep. Security camera footage also showed the Jeep near a storage locker rented by Schimmelpfennig. Despite extensive efforts, investigators were unable to locate any trace of Cook in the days following his disappearance.
The investigation eventually led detectives to Schimmelpfennig's rented storage locker, where they discovered a significant pool of dried blood, later confirmed to match Cook's DNA. Forensic pathologist Dr. Amanda Youmans testified at trial that the quantity of blood found inside the storage locker indicated that immediate medical attention would have been necessary for Cook to survive such an injury. However, no medical records from any facility in the area indicated that Cook had received such treatment. Additionally, .380 shell casings matching one found in Schimmelpfennig's apartment and the motorbike loaded into the Jeep were recovered. Assistant State's Attorneys Dave Gast and Jason Ramos presented further incriminating evidence, including cellphone and GPS records, establishing a connection between Schimmelpfennig and Cook on the day of the incident.
In May 2023, a Peoria County jury found Schimmelpfennig guilty of first-degree murder and concealment of a homicidal death in the slaying of Gabriel K. Cook. The conviction was notable as it was achieved without the victim's body being recovered before the trial, a case often referred to as a "bodyless murder case." Schimmelpfennig was sentenced to 80 years in prison for Cook's murder. The case was described as a "first of its kind" by the Peoria County State's Attorney's Office, highlighting the challenges of prosecuting murder trials without the victim's body. Cook's family members testified about the lack of closure and requested the maximum sentence for Schimmelpfennig, as they do not have a final resting place to grieve Cook's loss.
