Was this a David the Gnome episode?
I have a hazy memory of an episode where David was brought in to see a child who was very sick from something. The only way for David to cure the child was to get a rare plant from a small island in the middle of a lake. The only problem was that this island was inhabited by some kind of deadly serpent.
Was this actually an episode of David the Gnome or is my memory playing tricks on me? If so, what was the name of this episode?