Kendall is accusing her parents, Brent and Jill, of abuse, a claim that both adamantly deny. The former couple claims the teenager is a chronic liar.

Tell Dr. Phil Your Story: At Odds With a Family Member?

“Given her history, you just can’t believe anything she says,” asserts Jill.

WATCH: Dr. Phil Says Teen Has ‘Weaponized’ Lies To Hurt Her Family

“You’re going to have to really stand your ground here because she has weaponized her lies,” says Dr. Phil in the video above.

How does Dr. Phil respond when Jill asks if Kendall is acting out because of her parents’ divorce?

Check here to find out where you can watch part one of this two-part episode airing Monday.

Tell Dr. Phil Your Story: Have You Been Accused and Want to Clear Your Name