You achieved a good spooky feel here. I like how the dog works as a companion. Good tension of having the flashlight on vs. saving batteries.
The edge wrap was interesting in this one. I think I like it, but it did make it a little tricky with the mouse-based aiming of the flashlight.
I did have a little trouble telling when I had "caught" a ghost. Sometimes I held them in the flashlight beam and then they seemed to disappear, but my score didn't change and they reappeared soon after. Some indication, visual or sfx or both, would probably help with this.
Good game!