Amanda says that she’s determined to prove that her father, Rex, was murdered, despite an autopsy report that determined he died of natural causes. She says he went into the hospital suffering shortness of breath, and two weeks later, he was dead.

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After a cardiologist reviews her father’s medical records and autopsy report and determines that Rex died of “a heart attack in the setting of two other lethal conditions,” Amanda says she still has questions.

Dr. Phil explains to the young woman why he believes she is fixated on her father’s death, and offers her professional help.

WATCH: Man Says Sister Has 'Put Herself In A Perpetual State Of Re-Living My Dad’s Death'

In the video above from after the show, Dr. Phil explains his theory on why he believes there are no accidents in life – and how it can be applied to Amanda’s father’s death.

This show airs Tuesday. Watch more here.

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