Phobia

This certainly is not a great thriller (and it never aspired to be), but if you like low-budget B-movies, then you're likely to agree that it isn't THAT bad, either. I happen to think that all whodunits are inherently interesting if they're executed with at least a minimum level of competence, and "Phobia" was directed by the legendary John Huston himself! Far from his best work, yes, but he managed to keep my attention. The "surprise" ending, though, is predictable. (**)