Sherwood Schwartz had tried on numerous occasions to get Vincent Price to appear on Gilligan's Island. He wanted him for the role of Wrongway Feldman and the Mad Professor. Price finally agreed to appear in Season 4. When Gilligan's Island was cancelled after just 3 seasons, Price agreed to be on an episode of The Brady Bunch. Price was the key reason for the Hawaii episodes as he was still a major star at the time and the story lines were written based on his stereotype character.
Although this is supposed to be set in Hawaii, this episode is shot almost entirely on the Paramount sound stage. The final scene with the luau uses some of the sets from Gilligan's Island and has a green screen behind for the sky. Vincent Price did not travel to Hawaii for his scenes.
As in the previous episode, the lagoon set from Gilligan's Island can be seen in a few scenes
When trapped in the cave, Dr. Whitehead talks to a large idol that he has named Oliver.
In future seasons, the Bradys adopt a cousin named Oliver.
In future seasons, the Bradys adopt a cousin named Oliver.
Part 3 of a three-part episode, partially filmed in Hawaii.