This paranormal pic comes America’s most infamous prison – Alcatraz Federal Penitentiary in San Francisco, CA. The photo on the left shows a window looking into a former visitation room. The pic on the right shows the same window but with a shocking surprise.

“Whilst doing an audio tour of the place, I casually stopped to take a snap of the empty visitation block window on my iPhone,” British tourist Sheila Sillery-Walsh told the Daily Mail. “When I glanced at the photo on my mobile, I saw this dark female figure in the picture. I looked at the window again and there was no one in the room. I knew straight away that the woman in the photo was a ghost.”

Skeptics argue that the mysterious woman is actually a photo or poster of some kind. Others aren’t so sure. What do you believe?

Have a ghost photo of your own? Send it to christy@ghostsnghouls.com!