Apollo Movie Guide - The Hidden Review, links, and cast information. http://apolloguide.com/mov_revtemp.asp?CID=2076

TV Guide Online: The Hidden Review, cast and credits. http://www.tvguide.com/movies/database/ShowMovie.asp?MI=261&keyword=hidden,_the

IMDb - The Hidden (1987) Cast/credits plus additional information about the film http://us.imdb.com/title/tt0093185/

IMDb - The Hollow Man (2000) Cast/credits plus additional information about the film http://us.imdb.com/title/tt0164052/