If you liked this movie, you should also see: The Conversation (1974)The Last of Sheila (1973)Missing (1982)Jaws (1975)The Man Who Knew Too Much (1956)
A young woman doctor discovers something sinister going on in her hospital. Relatively healthy patients are having 'complications' during simple operations and ending up in comas. The patients are then shipped off to an institute that looks after them. The young doctor suspects there is more to this than meets the eye.