Sisters provides moviegoers with the special satisfaction of finding a real treasure while prowling cinema's bargain basement.

The facetious dialogue is a wet blanket, and De Palma isn't quite up to his apparent intention -- to provide cheap thrills that are also a parody of old corn.

During a second viewing, filled with the security of knowing when to look away, I was able to really watch the picture, and I found it to be one of the best thrillers I have seen.

This Peeping Tom nightmare is a well-tuned slice of cinematic frenzy complete with red herrings, a fantasy sequence and split-screen suspense. Along with Carrie, De Palma's most fully realised and coherent work.