who wrote the storyline of this film?
Jeffrey Price and Peter S. Seaman.
Who Framed Roger Rabbit
produced by Frank Marshall and Robert Watts, and written by Jeffrey Price and Peter S. Seaman. 
when does who framed roger rabbit take place 1988 is it a film? Yes, it is a live-action/animated comedy-mystery film. who directed it? Robert Zemeckis
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Who Framed Roger Rabbit [SEP] Introduction
Who Framed Roger Rabbit is a 1988 American live-action/animated comedy-mystery film directed by Robert Zemeckis, produced by Frank Marshall and Robert Watts, and written by Jeffrey Price and Peter S. Seaman. Loosely based on the 1981 novel "Who Censored Roger Rabbit?" by Gary K. Wolf, the film stars Bob Hoskins, Christopher Lloyd, Charles Fleischer, Stubby Kaye and Joanna Cassidy. Set in a 1947 version of Hollywood where cartoon characters and people co-exist, the film follows Eddie Valiant, a private investigator who must exonerate Roger Rabbit, a "Toon" (i.e., cartoon character) who is accused of murdering a wealthy businessman. Walt Disney Pictures purchased the film rights for the film's story in 1981.