The gang’s first mystery revolves around a missing professor and a mysterious suit of armor that comes to life in the night. The professor is delivering a suit of armor to the local museum when he disappears. After finding the empty truck with the armor inside, the gang delivers the suit of armor to the museum, where they hear the story of the Black Knight. The gang decides to sneak inside the museum at night to investigate.
Villain: The Black Knight
Locations: The Museum
In my opinion, the best way to buy episodes from the first Scooby-Doo series is Scooby-Doo: Where Are You!: The Complete 1st and 2nd Seasons. Alternatively, it can be purchased along with the next four episodes in the series in Scooby-Doo’s Original Mysteries.