They were coming from another dimension. It's not only I who crosses the curtain in between worlds, it's them to. A photographic investigator can cross the curtain so many times, my energy, as I have mentioned before, was diminishing. For this reason, sometimes it's better to wait for them to come to me. First I saw only one -and then the rest of them followed. It was very much like The "Close Encounters" scene, in the end on the movie. This was not a movie though. And I would not recommend it...