Diane Baker and Walter Matthau(SPOILERS)
"Mirage" is a good thriller...but not a great one...and one of the reasons that it isn't great is that it has a few "holes" in its logic(but don't all thrillers.)
Here is a big one for me:
About 2/3 through the film, the mysterious Diane Baker enters Greg Peck's apartment with him. They find Walter Matthau's private eye Caselle there. Good dialogue:
Peck: (To Baker) This is Caselle...I don't know his first name.
Peck: (To Matthau) This is Shela...I don't know her LAST name.
Anyway, Baker is friendly with Matthau, but Matthau gives off a "I want to be alone with Greg" vibe, and Baker dutifully goes into the kitchen...but can be seen starting to eavesdrop from there.
Matthau gives Peck vital information, the two have a spat(Peck doesn't LIKE receiving information that will "make him remember"), they "kiss and make up" and agree to meet again the next day. Matthau leaves.
...and we never see Matthau alive again. We DO see his corpse the next day, on his office desktop with a phone cord tied around it.
Fast-forward to : the end of the movie.
All the main baddies have been neutralized(though none of them killed, its a 1965 movie, after all) and Greg and Diane join for a "happily ever after" cuddle.
And I've always wondered about this:
Clearly Diane Baker must have "ratted out" Walter Matthau to the bad guys who -- at that time in the movie -- are her sponsors. Baker helped GET MATTHAU KILLED.
And yet, at the end, here's Greg in a clinch with the woman who sent a very nice guy(Matthau) to his death.
Leaves a bitter taste.