You visit a pawn shop and buy a puzzle.
Most of the pieces look weather-worn and faded, but still fit together. When you start to assemble it, the picture it forms grows increasingly familiar.
You realize it is a shot of the room you are sitting in right now, but in the window, there is an inhuman, greatly deformed creature sitting on the sill.
In your room, the shade is drawn, and as you go and raise it...