A 1974 tale of a sorority house that is terrorised by obscene phone calls from an unknown assailant. Unfortunately, the taunts then turn into murders as the girls fall victim to a mysterious madman lurking in the attic of their very own home. As the numbers dwindle one by one, suspicions turn to one of the boyfriends who has seemingly lost the plot after he receives the news his girlfriend is pregnant and planning an abortion - Do they have the right man though? Only time will tell. I guess the plot is like a very early version of 'Scream', with the killer scaring their victims by phone calls before going after them. They actually use more choice words in this though, opting to be far more crude and dropping the odd 'c-bomb' now and again, yet we never really see who they are as the murders are all done without a face being revealed. Despite it being easy enough to follow, I don't like the way some of the deaths are done out of sight so we assume they have been called, and I also think it's very unrealistic that the bodies of the victims are never found. I mean if several people have been reported missing or killed, surely the first place one would look is the rest of the house, including the attic? The whole thing is very open to interpretation as its not even confirmed why the psycho is doing what they're doing. On several occasions they refer to Agnes - who is she, an abusive mother, an imaginary friend? None of it truly makes sense and it is never revealed to us, leaving us hanging. If i remember correctly, I'm sure this is something that the more recent remake actually improves upon, but in truth it shouldn't have to. I always enjoy a film with this type of set-up where numbers dwindle and we're left guessing up until the last minute, but even with this twist ending, it never really made sense, and there were too many loose ends left untied for me. For an oldie, it's a goodie, but the baddie was a baddie and not a classic villain that would ever be remembered in horror history.