In October 2014, Kaylyn Whitaker was shot to death in the Martinsville, Illinois home she shared with her fiancé, Connor Scott. Initially, Scott told authorities that he was sleeping next to Kaylyn when the gun went off and he believed she committed suicide.

TELL DR. PHIL YOUR STORY: Terrible lies?

Kaylyn’s parents never believed that story and were adamant that Scott had murdered their daughter. More than 4 years later, Scott walked into a police station and finally confessed to the crime.

WATCH: Mother Of Woman Killed By Fiancé Claims, ‘She Was Always Afraid That He Was Going To Get Angry’

“He was a good liar. That’s all I have to say,” says Kaylyn’s mother, Leslie, after hearing the transcript of Scott’s call to 9-1-1 for the first time. “I have to disagree with you,” says Dr. Phil, adding, “He’s really not a very good liar here.”

Watch the video above to hear why Dr. Phil says, “There are glaring signs of deception here in what he’s saying.”

Connor Scott is currently serving 37 years in prison to be followed by three years’ parole. He is not eligible for early release.

This Dr. Phil exclusive airs Monday. Check here to find out where you can watch.

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