It's one of the oldest adages in Hollywood: If at first you do succeed, try and try again... to replicate that hit. Just as the movie business remains entrenched in sequel mania (Scary Movie 5,anyone?), almost every broadcast network has a spinoff of a popular series in the works for next season.
ABC is looking to expand its Once Upon A Timeuniverse with the Alice-centric Once: Wonderland. The CW is building The Originalsaround The Vampire Diariesbaddie Klaus (Joseph Morgan). NBC will explore Chicago law enforcement in producer Dick Wolf's untitled Chicago Fireoffshoot.
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