A man who was convicted of manslaughter and setting fire to a McKinney home will spend 75 years in prison, Collin County District Attorney Greg Willis announced on Thursday.

Christopher Joel Graham, formerly of Dallas, received a 75-year prison sentence for arson of a habitation and manslaughter. On Oct. 24, 2011, Graham, along with his then-girlfriend and two others, went to the McKinney home of an acquaintance.

The group used methamphetamines for a day or so, until one man died of a methamphetamine overdose. Graham assisted the man in injecting the fatal dose, which led to his indictment for manslaughter. Afterwards, Graham and his associates took electronics, jewelry and other valuables from the house. Before leaving the house for the last time, Graham set fire to the house to conceal the crimes. The fire destroyed the house, despite a quick response from the McKinney Fire Department. 

The McKinney Police Department arrested Graham and his girlfriend approximately two weeks later in Dallas. They found Graham driving a vehicle that he stole from the residence. 

A jury found Graham guilty, and State District Judge John Roach Jr. assessed punishment.

Graham also received concurrent sentences of 20 years for burglary of a habitation, and two years for unauthorized use of a motor vehicle.

Prosecutors used Graham’s prior conviction for Burglary of a Habitation to enhance the range of punishment for this case.

The case was prosecuted by Assistant Criminal District Attorneys Justin Johnson and Wes Wynne.