Sherlock Holmes (1984)

S01E21 Blinky Bill and the Monster

Danny Dingo hatches a scheme to frighten Blinky and his pals by convincing them that a monster lurks in the lake. However, Blinky insists on seeing evidence of this creature's existence. Rising to the occasion, Danny decides to transform Meatball into a monster. Will Blinky be fooled by the trick? And is there truly a monster hiding in the depths of the lake?