Things that go bump in the night

It turns out I seem to have the best luck (or worst depending on how you look at it) at shooting and finding creepy things at night. What are the odds that when I'm just simply trying to familiarize myself with using a camera in all types of light, the things that go bump in the night would choose to make an appearance in the post-processing stage? Needless to say, I'll no longer be testing the camera in the dark.