SAN DIEGO -- Jurors in the Richard Tuite murder trial heard a 1998 videotaped interrogation Thursday in which a tearful Michael Crowe told detectives he wants to cooperate but doesn't remember killing his sister.

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"I don't know how the evidence points to me because I didn't do it," the 14-year-old told Escondido detectives Mark Wrisley and Ralph Claytor during the Jan. 23 interview that year.

Michael Crowe told Claytor he doesn't remember moving Stephanie Crowe's body after she was stabbed on her bed.

"Were you trying to help Stephanie?" Claytor asked.

"I can't remember anything," Michael responded.

The detectives tell the teen he was made of two parts; one good Michael who loves Stephanie and one bad Michael.

Maybe the bad Michael killed his sister, Claytor told the teenager.

"If this is true, I don't even know he exists," Michael Crowe told the detectives.

Michael Crowe, (pictured, left, middle), and friends Josh Treadway, (pictured, far left), and Aaron Houser, (pictured, left), were originally charged with killing Stephanie. She was slain the night of Jan. 20, 1998 or early the next day.

Police found no signs of forced entry into the Crowes' rural Escondido home and figured someone there was responsible.

But before trial in 1999, a judge threw out most of the police interrogations of Michael Crowe and Treadway, saying they were illegally obtained.

Attorneys for Tuite were allowed to show jurors the interrogations in an attempt to convince the panel that the teenagers did it.

Prosecutors from the state Attorney General's Office said the boys' statements were coerced.

The defense suggests the blood evidence implicating Tuite was accidentally transferred to his shirts.

Margaret Decker-Martineau, director of psychological services for the Escondido High School District at the time, testified she counseled Treadway the day after the murder.

Michael Crowe and his sister, Shannon, were taken into protective custody on Jan. 21, 1998.

"(Treadway) asked me how I thought Michael was," Decker-Martineau testified. "He was very distracted."

She said she gave Treadway a ride home from school because she was unsure he was aware of his surroundings, especially walking along the road.

The psychologist said she met with Treadway, Houser and their mothers at Houser's residence on Jan. 25, 1998, which was Super Bowl Sunday.

Decker-Martineau testified that Houser was extremely polite, but she could sense he didn't want her there.

She said Treadway was still anxious and asked a question "completely out of the blue."

"He said, 'You don't think they think we had anything to do with this, do you?'" the psychologist testified.

Michael Crowe was arrested Jan. 24, 1998.

The case against the boys was dismissed when the victim's blood was found on a red sweatshirt Tuite had on the night of the murder.

Tiny smears of Stephanie's blood were later found on a white T-shirt Tuite had on under the sweatshirt.

Tuite was charged two years ago, after the murder investigation was turned over to the San Diego County Sheriff's Department.

Prosecutors said the diagnosed schizophrenic was in the area of the Crowe residence the night of the murder, asking for a friend named "Tracy."

Evidence also has been presented that the defendant liked to carry a knife.