Family photos are commonplace: many parents want official images of their children, so they gather, hire a professional photographer, and pose for the camera!

While Easter is often a cheerful time, given the abundance of smiles, one family photo has internet users on edge with a frightening aspect.

Have you seen it? It’s simple to overlook, so we don’t blame you. Hint: Look at the left side of the photo.

Congratulations if you have discovered it! How odd is that?

If you haven’t noticed it yet, take a closer look at the smaller child’s arm. Who’s hand is resting on it?

Many people have proposed hypotheses concerning the phantom arm, according to RelayHero.

The first explanation is that the hand belongs to a ghost. Whether or not you believe in the spiritual realm, it appears to inspire some sort of supernatural belief.

The second image appears to be more grounded in reality. Others assert that the image depicts the mother’s arm, with the middle, older child strategically inserted into the frame through sophisticated computer software.

Take another look and decide for yourself.

Regardless, this is frightening and strange. We’re curious who this family is and if they can supply any answers. Who’s arm is that?