I bought this on video under the title "Entity Force" for £2 second hand at a pawnshop, mainly because I liked the cover. What I got was an OK early 80's horror film that could have had more gore and titty but what it lacked in the gore/titty department it made up for in cheese. The climatic zombie fest towards the end of the film left nothing to be desired. The zombie's legs didn't bend when they walked! Also a valuable lesson is learned as a result of this film, whenever you encounter a back-from-the-dead physic with blue lightening coming out of his eyes, use your compact mirror!