The Snorkel
The third movie in the six film DVD set Icons of Suspense: Hammer Films is, so far, the best. The story takes the somewhat novel approach of showing you who the killer is within the first three minutes. The suspense then comes from wondering how (or even if) the other characters will be able to see the clues which are obvious to the audience. The acting is all very good and baddie is given an extra edge of creepiness with his choice of corny (although era-appropriate) high-waisted pants and skimpy speedos.