Mysteries Wanted
Along the lines of Gosford Park, Don't Look Now (Yes spooky but not really, not wanting specifically ghosts), And Then There Were None, What Lies Beneath, Fatal Attraction.
Aussie is fine although I have seen Jane Harpers stuff. Don't want Outback serial Killers. In fact don't want Serial Killers at all, no torture murders either, no gorefests.
I'm not completely into Agatha Christie, as in Poirot or Sherlock, I prefer her standalone stuff. And movies made after say 1970 not before.
Or stuff like Dead Calm. Do not suggest Triangle though. I liked the suspense in Dead Calm, I don't want all the Triangle slaughter fest though.
British seem to do it better - usually. But doesn't have to be UK. Not comedies.