Michael Peterson’s wife, Kathleen, died a bloody death in December 2001. He says he found her at the bottom of stairs in their home after what he believes might have been a fall. He was convicted of murder and sentenced to life in prison but released in 2017 after making a plea deal, but insists he had nothing to do with her death.

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“You said, ‘I will not plead guilty. I will not say that. Those words will never come out of my mouth. I won’t do it no matter what,’ But then you did,” Dr. Phil says to Peterson in the video above.

WATCH: Did Michael Peterson Murder His Wife And Try To Make It Look Like An Accident?

Hear why Peterson says he made an Alford plea. And how does he respond when Dr. Phil asks, “How do you explain to people who still doubt you who say, ‘People do not stand up in court and plead guilty – Alford or otherwise – to the death of their wife if they weren’t involved, if they didn’t do it.’ What do you say to those people?”

On Tuesday, hear about an unusual theory involving an owl that some believe may explain how Kathleen died. Check here to see where you can watch.

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'When I Watched You In The Documentary, I Saw A Lot Of Lie Behavior,' Dr. Phil Tells Guest