Batman is a thrilling 30-minute action series based upon the characters created by Bob Kane in 1939 appearing in Batman and Detective Comics Magazine published by National Periodical Publications, Inc. During his long career he was featured in the Superman radio series and in two movie serials produced during World War II. In 1966 the ABC network decided to produce the first Batman television series and it became an immediate hit. Starring Adam West, Burt Ward, Alan Napier, Stafford Repp, Neil Hamilton, Madge Blake, and (in the third and final season) Yvonne Craig as "Batgirl," and narrated/executive-produced by William Dozier, it was one of few TV series to be seen on 2 different nights a week: 7:30 Wednesday and Thursday evenings. The episodes were generally two-parters: Wednesday's episode left a cliffhanger, which was usually resolved in Thursday's episode. The 1966-1967 season had 2 3-parter episodes ("The Zodiac Crimes/The Joker's Hard Times/The Penguin Declines" [1/11-12 & 18/1967] and "Penguin is a Girl's Best Friend/Penguin Sets a Trend/Penguin's Disastrous End" [1/26/, 2/1 & 2/1967]) which left cliffhangers that would be solved the following week. These cliffhangers closely followed the tradition created by Kane in the comic books.