i have no idea what i be go to see when i decide to view this film and to my surprise it just an extremely well make horror film that be easily one of the best of the 1970 . film be of course low budget and this be an excellent example of how the story and style of a film create chill and not special effect . strother martin be one of the great character actor of all time and he have a rare star role here and the film also star martin good friend l. q. jones and green acre alvy moore . jones and moore help produce this film as well . tv veteran charles bateman be the star and enter the dragon beauty ahna capri be his girlfriend . capri be in a bikini at the beginning of the film and she just gorgeous to look at . film do a terrific job of stay with the story and not add a phony feel good end and i really like the way the film end . great atmosphere and interesting story and well direct by bernard mceveety . martin performance be top notch also a he doesn not hold back at all and really throw himself into the role of doc . good and underrated film .