The Secret of Gilligan's Island

The Secret Of Gilligan's Island is the 93rd episode of Gilligan's Island and the 25th episode of the Third Season. It aired on March 13, 1967.

Synopsis
The Castaways find a stone tablet -can they use it to get off the island?

Credits
Main Cast
 * Bob Denver as Gilligan
 * Alan Hale Jr. as The Skipper
 * Jim Backus as Mr. Howell
 * Natalie Schafer as Mrs. Howell
 * Tina Louise as Ginger
 * Dawn Wells as Mary Ann
 * Russell Johnson as The Professor

Guest Cast
 * None

Trivia

 * Syndicated versions of the episode omit the tag scene with Gilligan showing off his own hieroglyph.
 * The footage of the allosaurus comes from the 1960 movie, "Dinosaurus."
 * The cave the hieroglyphs come from looks like the same cave as the native relics in Voodoo Something to Me.
 * Mary Ann and Ginger are menaced by a fruit bat, first seen in Up At Bat.
 * The close-up of the tablet Gilligan has been carrying shows pineapples and bananas, known staples of the Castaways, as well as apples and something that looks like squash.
 * The Professor uses the words "demotically" and "boustrophedon" incorrectly. He uses them to describe the differences from reading left-to-right or right-to-left, but "demotically" actually refers to anything belong to a group of people while "boustrophedon" refers to writing in alternate lines in opposite directions (as from left to right and from right to left).

Quotes

 * Gilligan - Chief Howell say we stay here for 100 years or until we die... which ever come first.