This week, Grace tells Alexis about the missing Professor Hyde White and the legend of the Black Knight from Scooby-Doo, Where Are You!

Episode: What a Night for a Knight | Scooby-Doo, Where Are You! | Season 1 | Episode 1 | 1969 | Written by Ken Spears and Joe Ruby | Directed by Joseph Barbera and William Hanna | Hanna-Barbera Productions, Inc.

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