People United States of America Mark Schaefer peoplepill id: mark-schaefer-1MS 11 views today 40 views this weekAmerican screenwriterMark SchaeferBiographyFilmography (1)ListsAlso ViewedListsMark Schaefer is in following listsBy work and/or countryNotable ScreenwritersFrom our partnersSponsoredMark Schaefer