LOUISVILLE, KY (WAVE) - It's a case of one man's word against another.
On Monday, Jeffrey Mundt, Joseph Banis's former boyfriend, testified that Banis was solely responsible for killing Jamie Carroll.
Carroll's body was found buried in the basement of an Old Louisville home in June 2010.
Banis could face the death penalty, but since Mundt took a deal, that won't be an option in his trial since he took the stand against Banis.
Mundt said everyone started out on the same page on the night Carroll died in December 2009. "Joey was interested in having someone come over for sex, as was I," Mundt told jurors. "The three of us stripped naked and started watching porn and some music was on. We were playing around in the bed and so forth."
Mundt testified that things changes when it was just Carroll and him together on the bed. "We noticed Joey coming over, and we thought he was going to do something with Jamie or with me, and I feel a jerk," Mundt said. "I'm thrown off Jamie and thrown into the table that's on the bedside where I hit my head."
Mundt said he thought the two were acting until he tried to stand up. "Jamie was screaming Joey's name over and over and over again. Joey had a knife in his hand and was slashing at Jamie's throat."
Mundt said Banis also shot Carroll twice. Mundt testified that he was so freaked out, Banis gave him a date rape drug to calm him down, then threatened his life he didn't help dispose of Carroll's body. Mundt said Banis then locked him in the basement with Carroll's body and told him to dig a hole. Mundt said the process took three days.
Also on Monday, juror saw a video of Banis with knives on his belt. It was taken about a month after Carroll's death. Mundt testified that one of those knives was used to kill Carroll.
You can continue to follow @JaimieWeiss on Twitter for updates on this case.