Big Monster Gomera Murder Case

Synopsis

When Conan and the gang visit a movie set someone in the Gomera costume stabs the man in charge of the whole movie building. Conan discovers that the person who played Gomera is the killer. He managed to fool everyone because he stabbed himself as a cover-up and his closest friend on set became his accomplice during the murder out of hate for the victim. He reveals the motive for his crime: the victim wanted to end the Gomera franchise and stole his script to make into a new movie. The success of what was meant to be the last Gomera movie causes more sequels to be made, using scripts he continues to write in prison. (Source: Wikipedia)