A Scary 1923 Photo

I've never believed in apparitions before but after seeing this amazing picture, I am now unsure. This photo has been authenticated as genuine.

The photo is of an early medical lecture room were surgeons learnt their skills by dissecting and examining corpses. Maybe it's an optical illusion as not everyone sees the same thing.

It was taken by a spiritualist investigator in 1923, just before the building was demolished. He also made a poor recording of some unusual sounds he heard.

If you view the room, some people see weird shapes, but not everyone. If you listen carefully, it sounds like someone is whispering.