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Detective Casey is a fictional character in the Mickey Mouse universe. He is Chief O'Hara's head detective, first appearing in the Mickey Mouse daily comic in the 1938 sequence The Plumber's Helpers. The story was plotted and penciled by Floyd Gottfredson and written by Merril De Mares. Casey disappeared from American comics, but has been used frequently in Europe, especially in Italy. Despite his occupation, Casey is not especially bright. Therefore, Chief O'Hara recruits Mickey Mouse to solve some of his cases.
