09/05/2014 03:01 am ET Updated Dec 06, 2017

A Woman Vows To Avenge Her Sister's Murder (VIDEO)

In 1985, Rachel’s 14-year-old sister, Lori, was found murdered, and she believes Lori’s ex-boyfriend, Walt, killed the teen and got away with it — an accusation he vehemently denies. Rachel admits that proving Walt committed the crime has consumed her life. But how far will she go to make him pay for the murder she believes he committed? Watch the video above to find out.

Friday, on Dr. Phil, Rachel confronts the man she believes killed her sister.

An all-new season of Dr. Phil premieres on Tuesday, September 9.

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