The Killer Is One of 13

This Spanish giallo from the mid-1970s still harbors many of the delights of early 70s such as fantastic goldenrod curtains and elaborate, ornate dining rooms filled with antiques but every version I have seen on streaming has the worst subtitles, they move so quickly it's distracting - this may be a flaw in the writing of an international thriller to make it so terribly wordy, but come on I think we can do better than this. And I am a fast reader.

Like its predecessor, The Killer is One of Thirteen is filled with so many twists and red herrings that it's impossible to even guess who the killer is, in true Christie fashion. However, the grand finale is a huge punch line in and of itself.