Sometimes it really is all in the details, as the creepiest things in our society are usually hiding in plain sight. Ever seen a "normal" picture and gotten the heebie jeebies just from its odd vibe? You're probably missing something, and with a second look over, you'll likely find the details that you wish you hadn't.
Not all creepy pictures are indicative of something sinister, but all sinister photographs are creepy as heck.