At this point we have to assume that the shadow off Bogart’s right shoulder looking like a man in a fedora is either the man who killed Riggs, the partner of Gilles (from the shot 3 weeks ago), or the ghost of Riggs himself. I’m going with the ghost. And then you really have to deduce that the hidden woman under bright spotlights is even more significant than previously assumed. Elementary, my dears.⠀