Roy Renick, 22, and Samuel Hadden Gifford, 20, both pleaded guilty to murder Friday for the July 2009 killings of 22-year-old Stacey Barnett and 21-year-old John Goosey.
Renick was sentenced to 35 years in prison. Gifford received two concurrent 50-year sentences.
Barnett and Goosey were shot to death in their West Campus condominium in July 2009.
Shortly after the killings, police charged 19-year-old James Richard "Ricky" Thompson with two counts of capital murder. Police said Thompson confessed to killing the couple, claiming he owed Goosey $8,500 for drugs.
The affidavits state that all three suspects collaborated to plan the murders. They even decided beforehand that if Goosey's girlfriend, Barnett, was in the condo that Thompson would shoot her too because she would recognize him.
Police records state that Renick helped Thompson find a weapon, strategically plan the shooting and provided a homemade silencer for the firearm.
According to police affidavits, Thompson gave both suspects a half ounce of marijuana each as payment for their help in the murders.
In one account of the planning stages of the murder, Thompson told Renick that he needed the firearm silencer to "kill Goosey and get rid of his debt."