We don't have a biography for Mr. Thornwell yet. Hang in there, or go ahead and contribute one.
Appearances
Knots Landing
Guest cast, played by Michael McGuire
- Episode 4x13: Cutting the Ties That Bind (Jan 6, 1983)
- Episode 4x15: To Have and to Hold (Jan 21, 1983)
- Episode 4x17: The Morning After (Feb 3, 1983)