Patty Duke was a very popular actress at the time, one of a handful of teen/child stars who was taken seriously. To take advantage of that the Patty Duke Show was conceived. It ran for 3 years on ABC network.
The program featured Duke in dual roles as herself (Patty) and her Scotch cousin (Cathy). The two are very different: Patty supposed to be the 'average' American era teen and Cathy the more mature and traveled counter. The show was set in Brooklyn Heights, New York.
The format, with Duke playing dual roles, was a real first for TV at the time. TV, films and music were riding a wave of teenage girls in the early 60's. Duke was an actress, although she, like many other girl teen stars gave singing a go and appeared on several music shows in the mid-60's.
The program itself was one of the last actually filmed and produced in New York. Others, such as 'The Naked City' and 'Car 54 Where Are You?' had gone off the air by the time Duke's program started. The Duke program, taking advantage of New York states lax child labor rules, was made there due to Dukes age (16) when production began. The program actually moved to Hollywood for a few of the final episodes. Although filmed in New York, and unlike most New York produced programs, the program was filmed in studio with no outside or remote scenes.
TPDS evolved over its broadcast run. At times a source of conflict, Patty and Cathy come to terms and eventually co-conspirators in many antics. Patty's boyfriend manages to stick around during her many flights of fancy, chasing other boys and generally using him and taking advantage. He provides a base and sense of continuity. Patty's family are all wary of her (from experience) but are supportive. Many guest stars appeared as well, most from the music field and popular with teens at the time.
William Asher was involved with the show, leading a team of successful producers and directors. Asher eventually left to focus on 'Bewitched'.
Although still doing well in the ratings, TPDS show was canceled after its 3rd season (105 episodes).
One of my personal questions about the program was why the use of look alike cousins? The whole premise was far-fetched and probably not needed to make it successful. Cathy's part in the plots were often superficial and didn't contribute much. Asher had noted it was used as a 'hook' or 'gimmick' to stand out, however, you can easily argue Duke was talented enough to carry the program as just the Patty character. Cathy's on screen time and lines were reduced over the programs run, and she was actually not in at least 5 episodes in season three. Something to ponder.
