PROVO — Richard Killpack was at his wits end.

His 4-year-old daughter was scaring him and baffling the family therapist. The little girl was smearing feces on the walls, ripping holes in her clothes and refusing to sleep.

"Your child has extreme psychotic tendencies," Killpack says the therapist told him.

Not knowing what else to do, Richard and Jennete Killpack say they took their daughter to the Cascade Center for Family Growth, a controversial Orem therapy clinic, on May 23, 2003.

It was at the clinic, which has since closed, that the Killpacks say they learned an unorthodox form of punishment that ultimately led to their daughter's death.

That's what Richard Killpack told a Springville police investigator during a June 19, 2003, videotaped interview.

On Monday in 4th District Court, Utah County prosecutors played the tape, in which Killpack explains how he and his wife desperately tried to help their daughter battle hidden mental health problems that first worried and then horrified them.

Shortly after the couple adopted Cassandra in 1999, Killpack said he and his wife saw "signs and symptoms of things we couldn't explain" in the 2-year-old girl.

Cassandra would often get a glazed look, or "zone out," he said, and stop talking. She would also refuse to eat or hold food in her mouth for hours.

Killpack said a therapist diagnosed the girl with attachment disorder, a mental illness in which a child does not bond to his or her parents, most often the mother. The disorder most often affects adopted children.

Killpack said the therapist used conventional treatment methods that were ultimately unsuccessful. When he suggested the Killpacks put their daughter on medication, they refused. Finally, the therapist gave up.

"He said he was done and couldn't do it anymore," Killpack said.

To help Cassandra feel more comfortable in their family, Killpack said he and his wife adopted another black baby. The plan backfired.

"She hated her. She would walk by and slap her," Killpack said. "She would take food out of her mouth."

Cassandra started staying up all night and rolling around in her own urine. She also kicked her older sister in the head.

"We were freaking out," he said. "We didn't know what to do anymore."

Killpack said a friend referred them to Cascade. Therapists there seemed to understand exactly what he and his wife were going through.

"I thought this is it. These guys got it," he said.

After meeting with Cassandra, a Cascade therapist told the Killpacks the girl would need intensive therapy: three-hour sessions, five days a week. Without their brand of therapy, Cassandra would kill herself or someone else.

"Our goal is to teach her emotion," Killpack said a therapist told him. "We do that by teaching anger."

Killpack said the therapist then showed the couple how to help their daughter: by holding her down and inciting her by tickling or screaming at her, inches from her face, until she started crying or yelling back. By forcing their daughter to verbally express her anger, the Killpacks would help her break down emotional barriers.

Afterward, Jennete would hold and soothe the girl, forging a bond.

"When we got in the van, my wife said, 'I don't feel comfortable doing that. I won't do that,' " Killpack said.

He said they were also told to punish Cassandra by indulging her to the point of excess. During one therapy session, Cassandra was made to kick a wall 100 times because she had stayed up late the night before kicking her bedroom wall.

"If she wants water, give her excess. If she wants food, give her excess," Killpack said he was told. "The first time we gave her 32 ounces and she vomited. So then we decided three glasses was enough. We had to decide what excess meant."

Killpack said the therapy sessions only made things worse, and when he told therapists it wasn't working they began improvising.

"It seemed like it was by the seat of their pants," he said.

When he told them Cassandra didn't like physical activity they began using it as a punishment — forcing her to jump up and down while they screamed at her. For one session, he said Cassandra was made to jump for almost three hours.

As the weekend approached and Cassandra's behavior worsened, Killpack said he began to worry. He said the couple was told to continue what Cascade had been teaching them through the weekend.

That's what the couple was doing when Jennete placed Cassandra on a bar stool that Sunday and began pouring water down her throat as a punishment for stealing a sibling's drink.

"Why do you think she died?" the Springville police investigator asks near the end of the interview.

"She was too young, and the things they put this little girl through, it was too much," Killpack says, referring to Cascade. "I saw the look in her eyes. She was weak. All the things in her life were being taken away from her. I think the little girl just had enough."