Who hid the microcard in the elevator?
How did the micro card get behind the plate in the elevator?
Simon would have been dead and Caroline was unaware that she was being filmed, yet someone would have had to remove the card from the camera (or cameras) and hide it in the elevator. The only thing I can think of is that Simon's father did this, but if he knew that his son had been murdered, why didn't he alert the authorities?
I know that a certain degree of improbability is a hallmark of Film Noir, but in order for this film to work, you must learn what was on the hidden micro card, but I can't see how it got into the elevator so that Porter could find it many months later.
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