We're going to preface this one with a recommendation you ingest a grain of salt before reading on—but it's an intriguing story all the same. A British tourist claims she captured an image of a ghost at Alcatraz during an April visit to the former prison. Sheila Sillery-Walsh tells the Daily Mail that she took a photo of an "empty visitation block window" using her iPhone 5c, but the image that resulted wasn't empty. "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."
Her partner, for his part, says it's definitely not Sillery-Walsh's reflection. "The woman's hair and clothing is from a different era—it looks like she's from the 1930s or '40s." KPIX turns to a former prison guard who worked on the island in the '60s for some insight, but George DeVincenzi simply said that in his eight years on The Rock he saw no ghosts (and personally doesn't believe in them). And if she is real, who could she be? No clue; during its operation as a federal prison, no one was buried on the island, though eight were murdered there. SFist points out that no ghost sighting has been authenticated there (this per the company that ferries tourists to and from Alcatraz) and the Golden Gate National Recreation Area that now runs the site has similarly dismissed claims.