The New Scooby-Doo Movies (1972)
S1E5 Guess Who's Knott Coming to Dinner
Episode Overview
While the gang takes a break at Moody Manor to ask for directions, they are unexpectedly mistaken for the nieces and nephews of Captain Moody by a quirky group of characters, all of whom bear a striking resemblance to Don Knotts.
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S1