By Meghan McCormick
A licensed clinical psychologist testified Tuesday that a Norman man's alcohol use and mental health issues substantially reduced his capacity to form the intent to kill his sisters and another woman more than two years ago.
Dr. Bill Sharp today was the last defense witness called to testify on behalf of William Eugene Davis, 52.
Davis is on trial for shooting his two sisters, Tami Link, 52, and Sheila Ellis, 56, and Link's mother-in-law, Letannah Bishop, 87, on Sept. 4, 2007.
Sharp interviewed Davis in December 2008 at the Cleveland County Detention Center. Records show Davis' blood alcohol level registered .308 on the day of the killings.
Sharp said he based his conclusion that Davis was impaired to form intent on the interview, Davis' medical records and additional mental tests that he performed.
Defense attorneys Craig Corgan and Lynn Burch rested their case around 11 a.m. Tuesday. Corgan and Burch contend that Davis had an alcohol induced blackout on Sept. 4, 2007, and doesn't remember the events of that day.
During cross examination, Sharp said he didn't believe he ever quizzed Davis about what happened on that September day at 1517 Oklahoma Avenue.
Cleveland County District Judge Lori Walkley adjourned court until 1:30 p.m. At that time, Cleveland County District Attorney Greg Mashburn and Assistant District Attorney Christy Miller will present closing arguments followed by Corgan and Burch.
The case could go to the jury as early as Tuesday afternoon.
Meghan McCormick
366-3539
mmccormick@normantranscript.com
