This 1974 movie starring Margot Kidder continues a long tradition of suspense movies about women (usually one, but here a whole sorority houseful) threatened by - but safe inside from - a lunatic, eventually realising the danger comes from inside, not outside, the safehaven (
The Spiral Staircase,
When A Stranger Calls, for example) and it is an exceptionally effective, intelligent horror thriller: well-acted, with a large number of characters all fleshed-out and strong; rich in detail, and with some good humour which helps make, by comparison, the last twenty minutes especially deranged and terrifying!
★★★★★
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