Marvin Gray

Marvin Gayle Gray (August 7, 1954 – July 23, 2013) was an American serial killer. Being a powerlifter, Gray, while imprisoned, achieved incredible results in powerlifting, almost breaking world records. Since 1992, relying on his physical strength, he committed several rapes and murders of fellow inmates, which resulted in taking exceptional measures against Gray by putting him in a high-security prison's solitary confinement cell, restriction of movement within the prison and others.

In the 2000s, he was considered the most dangerous prisoner in the state of Colorado, being convicted of one murder and confirmed to have committed at least two others, personally confessing to killing 41 people across 8 different states from 1971 to 1992. However, the credibility of his testimony continued to be disputed until his death.

Early life Marvin Gayle Gray was born on August 7, 1954, in Princeton, Caldwell County in rural Kentucky. He was the seventh of 10 children. At the age of four, he began to suffer from panic attacks, and as a result he spent the next seven years taking medications containing methamphetamines. Since early childhood, he was attracted to work in the tobacco fields and labor discipline industries.

He did several odd jobs until 1992, when he again was arrested for burglary. Given the severity of the crime he committed in 1984 and the violation of the conditions of his parole, the court, based on judicial directives in effect at the time in the state of Colorado, Marvin Gray was given life imprisonment as a habitual offender. From this point on he was never released again.

On July 19, 1993, Gray beat and raped his 27-year-old cellmate, Gary Hilton. Less than a week later, he raped another inmate, James Mervyn, after which he was transferred to the Colorado State Penitentiary, a special high-security prison where exceptional measures were taken against him.

Death Marvin Gayle Gray died on July 19, 2013, from heart failure while imprisoned in the Colorado State Penitentiary, located in Cañon City.