James Koepp, 49, faces three charges of first-degree intentional homicides in the deaths of Danyetta Lentz, her 17-year-old daughter, Nicole, and her 14-year-old son, Scott.
Lentz's father found all three bodies in the trailer home they shared in January 2007. A forensic pathologist has testified they were stabbed and strangled.
Prosecutors say DNA in blood stains on Koepp's clothes tie him to the murders.

