However, one family photo is throwing internet users over the edge with one particularly unsettling detail.

Recognize it? We don’t blame you because it’s rather simple to overlook. Here’s a hint: look at the picture’s left side.

Well done if you’ve found it! What a strange thing.

Look at the arm of the younger youngster if you haven’t already. Whose hand is on it, exactly?

RelayHero reports that numerous people have developed theories regarding the phantom arm.

The first is that the hand belongs to a ghost. It certainly seems to generate some sort of supernatural belief, whether or not you believe in the realm of the paranormal.

The second is a little more realistic. Some people think the middle, older child was actually added to the picture using a clever computer program and that it’s really the mother’s arm.

Take another look, then make your own judgment.