On the stand Friday morning, was expert witness Dr. Werner Spitz. He’s most known for his testimony on the assassination of John F. Kennedy.
He gave his opinion on Heather's injuries from that night two years ago.
"These were not attack wounds,” Spitz said on the stand. “These were, in my opinion, self-inflicted wounds."
In earlier police interviews played during the trial, Heather told investigators the cuts and stab wounds were from her husband attacking her with a knife just before she shot him.
Dr. Spitz told jurors the injuries were too meticulous and superficial to come from an attack.
He had jurors look through a magnifying glass and to show how shallow the cuts were. He also drew the cuts out on his arm, and demonstrated how he believes they were in places that wouldn’t make sense in a self-defense scenario.
"There is no doubt in my mind that the wounds are superficial and are not qualified to be attack wounds,” Werner told the jury.
Defense attorney Morgan Martin called Spitz's testimony dead wrong.
"The truth of the matter is, you cannot say that these wounds were self-inflicted. That is simply your opinion, is it not?” Martin asked Werner.
He pointed out to jurors that Spitz never saw the injuries in person, and questioned his recollection of where the injuries were. He later asked why an example in Spitz's textbook on the subject was different from his opinion in court.
"Before they were stabbed to death, they had superficial scratches on them, didn't they?" he asked, while referring to a different self-defense case Spitz had written about.
In his testimony, Dr. Spitz also told jurors the gunshot had to be fired from more than two feet away. Martin says not enough testing was done to prove that.
Monday, August 21 2017 5:01 PM EDT2017-08-21 21:01:51 GMT
Michael Lawrence Tyler, a 46-year-old New Orleans-based rapper who goes by the name Mystikal, was booked Aug. 21 into Caddo Correctional Center on a charge of first-degree rape. (Source: Semmie Buffin/KSLA News 12)
He said he turned himself in "to get this business reconciled, get this behind me, man."