Casey Devol pleads guilty in Franktown double murder

BY ELLIS ARNOLD EARNOLD@COLORADOCOMMUNITYMEDIA.COM

After initially pleading not guilty to killing his sister and her boyfriend in rural Douglas County, Casey Devol reversed course and pleaded guilty weeks before his trial was set to begin.

Devol had pleaded not guilty in September and was set to see trial starting Aug. 7, according to the state judicial branch website.

He pleaded guilty to two charges of second-degree murder on July 19, according to online court records. As a result, his two charges of rstdegree murder were dismissed.

Devol also pleaded guilty to a charge related to cruelty to animals. Authorities say Devol also killed a dog in the incident.

He’s set for a sentencing hearing Aug. 7.

A recording captured audio of the incident where Devol allegedly committed the murders, according to prosecutors.

“What we have are recorded statements of the murder itself which were made by one of the victims,” Andrew Steers, a chief deputy district attorney, has said. e existence of the recorder was not known, Steers said, until the autopsy in the case that left Jessica Mitchell, 32, and Bryan Todd Gray, 34, dead in the Franktown area. ey were discovered in February 2022 in a garage adjacent to a house they lived in on Russellville Road. Mitchell was Devol’s sister. e recording captured the events leading up to the killings: ree people appeared to be having a dinner and at one point talked about a birthday gift, Steers said. At some point, the man authorities say is Devol leaves and returns and kills the other two people and a dog. e report, released by the Douglas County Coroner’s O ce, shows both victims also had meth, alcohol and marijuana in their systems. In addition to the toxicology reports, notes were made in both autopsies that each had a history of methamphetamine use.

Authorities don’t know why someone chose to record the interaction, Steers said during a March 22 hearing in Douglas County District Court.

Mitchell was found with a “digital recorder device,” according to her autopsy report.

A coworker of Gray’s discovered him and Mitchell in the Russellville Road garage about 1:30 p.m. Feb. 8, 2022.

Devol was found and arrested at a hotel in Salina, Kansas, on Feb. 9, 2022. He complied when o cers attempted to place him in custody, according to testimony at the hearing.

Autopsy results show the victims had bruising and shallow injuries and had been shot by two di erent rearms.

Deputies discovered security footage for the home that showed someone entering the garage carrying “multiple handguns and a long gun.” After a tip from a friend of the family, investigators alleged that Devol is the person in the video.