All About Eva

All About Eva is the 82nd episode of Gilligan's Island and the 14th episode of the third season. It is best known as the one where Tina Louise plays two characters. It aired December 12, 1966.

Synopsis
A Plain Jane named Eva Grubb comes to the island to escape society and live by herself without being bothered. However, Gilligan and Ginger discover her boat and believe they're being rescued. However, the Professor deduced something else is up and everyone searches for Eva on the island. Gilligan discovers her, and Eva runs out to be caught by the Skipper. She surrenders the boat willingly, but the Professor reveals when they reach civilization, they'll send someone back for Eva who is distraught and shouldn't be alone. Gilligan, however, accidentally reveals this to Eva who decides to keep everyone prisoner on the island by hiding the spark plugs to her boat. Ginger decides to give Eva a makeover to buoy her spirits, but it results in Eva looking exactly like Ginger. Eva tests this similarity by coming on to Gilligan, and she returns the spark plugs. The Howells decide to throw a party to thank Eva, but Eva overhears Ginger comment that looking like her might not be enough to help her get dates. Eva secretly knocks out Ginger and tries to be her at the Howell's party by switching identities and dresses several times. The Professor soon begins to get suspicious just as Ginger returns and busts her. Eva is shocked and apologizes, but the fact that she fooled everyone during a party leaves her believing she could get away with stealing Ginger's career. She secretly leaves with the boat and leaves behind a note to the stunned Castaways and Ginger distraught and upset, never wanting to hear Eva's name ever again.

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
 * Tina Louise as Eva Grubb

Trivia

 * This is one of the few episodes where the tag scene is left intact in syndication.
 * Tina Louise gets an extra opening credit for playing Eva Grubb.
 * It is unclear in this episode if Eva legitimately resembled Ginger or just ended up looking like her after the make-over.
 * The identity of the actress playing Tina Louise's body double is unrevealed.