List of The Patty Duke Show episodes

The Patty Duke Show is an American television sitcom starring Patty Duke, William Schallert, Jean Byron, Paul O'Keefe and Eddie Applegate that originally ran on the American Broadcasting Company (ABC) from September 18, 1963 to April 27, 1966.

Patty Lane's European cousin, Cathy Lane (Patty Duke in a dual role), comes to Brooklyn Heights to live with the Lane family.

Patty falls for her substitute French teacher.

Patty inadvertently alters a computerized IQ test. As a result, she is mistakenly categorized as a genius.

Martin mistakenly believes that the family is trying to hide the fact that Patty and Richard are going to sneak off and get married, but Cathy's hiccups give them away.

Crotchety Aunt Pauline (guest star Ilka Chase) comes to the Lane household for her annual visit. Things seem to be going as good as can be expected until Aunt Pauline has a confrontation with Cathy over the way her father has been raising her.

A girl invites Ross to his first party, but Ross is hesitant to go. Patty and Cathy get involved, but will that change Ross' mind?

Patty and Cathy have a slumber party at their house for some of their girlfriends. Richard, Henry, Tom and another boy show up at the door, before the party starts. Unbeknownst to Patty and Cathy, Ross tapes the girls' conversations during the party and uses it for blackmail against them. The two cousins end up doing his chores, to keep Ross from playing the tape to others and wait on him constantly. Patty and Cathy eventually turn the table on Ross and everything works out fine in the end for the entire Lane family.

Cathy helps Brooklyn Heights high school's best basketball player prepare for a class test. If he fails, he will be ineligible for the big game.

Patty and Cathy unknowingly nominate each other for President of the Girls League. What begins as a friendly rivalry turns into a battle of wills and some dirty campaigning.

Through no fault of their own, Cathy accidentally gets the flu shot that was meant for Patty. Cathy's reaction to the shot causes her to miss the dance party later that night, so Patty decides to pull a double shift so Cathy won't lose her boyfriend.

After feeling like a wallflower at one of Patty's parties, Cathy asks a newspaper columnist how she can be more popular. Cathy tries hard, but the results are not what she expects.

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