Way back in pre-vcr, early 1980s Florida I tried to stay up and watch this but ultimately fell asleep before the film's airing time. This was when channel 13 was ALWAYS showing little imported horror and suspense films like: Beyond The Door, Dracula A.D. 1972, Shock Waves, Welcome To Arrow Beach, Secret Of Seagull Island, The Psychic, Lady In The Car With Glasses And A Gun, Night Watch (with Billie Whitelaw), Rider On The Rain, Hands Of The Ripper, Reflections Of Murder (Tv's Diabolique remake), Rosemary's Baby, The Legend Of Lizzie Borden, etc, just to name a few from memory. Very cool time! Anyway, this missed opportunity has always haunted me and I've searched for this title for years so when Turner Classic Movies aired this I was elated! Was it worth the wait? I can honestly say yes. A great film? No, but highly watchable and everything I had expected based on the brief, old summary that TV guide gave the film. I can't add to anything that has already been posted about this film but if you dig seeing attractive ladies in peril running around an appropriately gaudy Gothic villa and sunny, Naples scenery then this fills the plate. While watching 'Dark Purpose' films like 'Hatchet For The Honeymoon' and 'Champagne Murders' immediately popped in my head. That should give a clue as to the actual feel of the movie (if one has seen these two flicks). AND of note is the always great George Sanders: brief but exceptionally bitchy with some snide lines! What a little queen! One last thing: it's been posted that the print that TCM aired was bad (with seriously spotty sound) and maybe so but that's only in comparison to their normal output of LBX & remastered films, yes then it was a low grade print. But in my opinion: shoddy 'Dark Purpose' is better than no 'Dark Purpose'