White Mask

A man is working late in a museum with a white mask propped up on a table.  He notices the mask has very human-looking eyes, and when he gets closer to look, they suddenly move to look at him.  He quickly realizes this is a person wearing the mask behind the table, but when he shoves the table away, there is no one there, just the mask floating and staring back at him.  It starts to move, and when it turns, it goes invisible as if there is no back side to the face.

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Another one that was a dream for me.