Troy Allen Crook, 33, was one of two men accused of killing two cousins in Vilonia back in 2008.
Monday, in Faulkner County Circuit Court, he pleaded guilty to two counts of first degree murder and was sentenced to 100 years in prison.
He will not be eligible for parole until he is 103 years old.
Last year, Ronald Dean Charles, 35, of Cabot pleaded guilty in the case and was sentenced to life in prison without parole.
He and Crook were accused in the shooting deaths of Lonnie Franklin Brock, 62, and Bobby Don Brock, 45, at their home on Brown Road, just east of Vilonia.
Family members found the men dead, one in the yard and the other inside the house.