A man standing trial for murder and kidnapping puts his father and a member of his defense team on the stand.

If convicted, Lawrence Stinnett could face the death penalty for those charges in connection with the slaying of his former girlfriend, Christina Renshaw, back in 2006.

Stinnett put attorney Jonathan Hieneman and Robert Stinnett on the witness stand Wednesday afternoon.

Robert was asked about his son's past relationship with former girlfriend Jackie Thompson, calling his mental capacity into question.

"Were there police ever involved in that situation?" Lawrence Stinnett asked his father on the witness stand Wednesday.

"Yes," he replied.

During questioning, Lawrence Stinnett reflected on another past relationship he had before Renshaw and how at one time he tried to convince his dad men were hiding inside her attic.

"Did the defendant seek help with any mental issues that you're aware of?" Stinnett asked his father.

"Yes," he said.

But during cross-examination, Stinnett's father said during his son's relationship with Renshaw he was holding down a job and his mental state wasn't a concern.

"In February of 2006, as far as you know, your son and Ms. Renshaw were engaged in a normal relationship?" Commonwealth Attorney Chris Cohron asked Robert Stinnett.

"Yes," he said.

At issue for Lawrence Stinnett continues to be pieces of evidence he says have been tampered with, which have included a past request for Renshaw's organs to be preserved until the trial ended.

"What was the response to that?" Stinnett asked Jonathan Hieneman, co-counsel for Stinnett.

"That there were no organs preserved," Hieneman said.

Stinnett called Hieneman to the stand Wednesday afternoon, calling into question two cell phones taken from the crime scene that Stinnett says weren't brought to his attention until 2008.

"The two phones in question did not belong to me or Christina Renshaw. It appears somebody was staying in the house while I was gone that might have something to do with what this case is all about," Stinnett told Judge John Grise Wednesday afternoon.

Stinnett says if he's being withheld evidence, he can't fully lead his own defense.

But Judge Grise called Stinnett's claims irrelevant, citing that evidence has been made available to him.

"You've known that the evidence on the floor you've been complaining about has existed since 2008. This is 2010. Your complaint that there were two years you didn't even know it existed doesn't really have any relevance to the issues that we're trying in this case," Grise said.

The defense is expected to finish with all witness testimony on Friday.

One person unlikely to take the stand is Lawrence Stinnett himself.

He told the court on Wednesday that he felt it wasn't in his best interest.