Article: Defense asserts stab wounds show Polk acted in self-defense

MARTINEZ -- Felix Polk knelt as he attacked his wife, who lay on the floor beneath him, a defense expert testified Thursday in murder defendant Susan Polk's trial.

Susan Polk fought her husband off with a kitchen knife, stabbing the 70-year-old psychologist 27 times in self-defense, said Dr. John Cooper, a forensic pathologist who is now a full-time expert witness.

Cooper dropped to his knees before the jury to demonstrate how Felix Polk's stab wounds tell the story. The direction of stab wounds in Felix Polk's abdomen show that Susan Polk had to be beneath him, not standing over him, when she stabbed him, puncturing his stomach.

Cooper said it is evident that Felix Polk was the aggressor. ...

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