Demon, Demon An executive falls in love with and marries his secretary. However, he soon begins to suspect that she may be a demon who is after possession of his soul. Details Casts Posters Title Demon, Demon Release Date 1975-11-11 Runtime 01 Hours 14 Minutes Genres Horror TV Movie Thriller Production Companies Lefferts, Lenjen-Fox TV Production Countries United Kingdom Bradford Dillman... Sam... Juliet Mills... Isobel... Robert Emhardt... Irving... Aesma Abigov... ... Robert Symonds... Ruig... Ned York... Jason... Billy Barty... Max... Helen Craig... Minna... Katherine Loder... Joan... Original Size (500x750)