12/16/2014 02:31 am ET Updated Dec 06, 2017

The Best Christmas Gift This Dad Could Ever Get (VIDEO)

Forty-six years ago, when Greg was a teenager, his newborn son was placed for adoption, and he has been looking for him ever since.

“This Christmas,” Greg says, “one of my biggest wishes is I hope to find my son. It's important to me for him to know that I never abandoned him. I always wanted him. That would be a tremendous Christmas gift, if I could possibly get that."

Watch what happens in the video above when Troy Dunn, who specializes in finding and reuniting people, surprises Greg and introduces him to his son, Wendell. Dr Phil also has a surprise for Greg on Tuesday’s show. Click here to see where you can watch.

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