Jen says her 12-year-old son, Jack’s, behavior is out of control. She says he’s "extremely violent," and has threatened to hurt himself and her.

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“He wanted to go get a shard of glass, and kill himself,” Jen says.

The mom says that Jack has even threatened to kill her on several occasions. “One occasion, he broke a wooden dowel, and he told me if I came any closer, he was going to stab me to death,” Jen says. “He’s told me he wished that I was dead.”

WATCH: Mom Says 12-Year-Old Son Has Kicked And Punched Her, Threatened To Stab Her

What does Jen, who says she believes her son suffers from mental illness, believe triggers Jack's behavior? Watch more in the video above.

On Wednesday's episode of Dr. Phil, hear why Jen’s ex-husband, John, says he’s convinced their son is possessed by evil spirits and has plans to perform an exorcism on the child – something Jen vehemently objects to. What does Dr. Phil think needs to happen to help Jack? Check here to see where you can watch.

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Father Says He’s Convinced 12-Year-Old Son Needs An Exorcism