"Eric, did you kill your mom?" asked Koula's attorney, Keith Belzer, during Koula's testimony in court.

"No," said Koula.

"Kill your dad?" asked Belzer.

"No," said Koula.

"'I didn't do it. I didn't do it.' It just reverberates in your head," said Koula.

Koula's attorneys say they are working to appeal the case, but there's no timeline for when that process will be finished.

You can see the entire one-hour "48 Hours Mystery" "Desperate Measures" episode on the Koula trial on Saturday night at 9 on News 8.