Janet Leigh doesn't do much other than channel Murray Hamilton in Jaws.
But Jamie Lee has quality screen time (both her comedy hitchhiker and the disturbing sequence I mentioned earlier) and it's really Adrienne Barbeau's film.
Her performance is utterly gripping and propels the film along, building tension and providing some of the best leprosy infected drowned sailor zombie action to be found in any major motion picture.
Honestly you kids...