This early slasher is a pretty great ride–suspenseful and funny in equal parts, with likeable characters and good pacing. The creepy boyfriend as red herring gives this movie a giallo feel (as does the perfectly-captured ’70s vibe of the clothes and decor). It’s not particularly bloody, especially by giallo standards, but it has its moments of gore.
Also, it has Margot Kidder. Who is fabulously foul-mouthed and mean.
It’s also Bob Clark’s other Christmas movie; and I kind of like this one better.