What Was The Last Thing Pamela Saw Before She Died?

A hundred years ago optography a "technique" that could allegedly extract the last image a deceased person had seen before death, was used in murder cases across the world. The infamous Pamela Werner case in Beijing was no exception. 

"Finding the killer by taking photos of Pamela’s eyeballs:

British detective Botham and Chinese authorities have investigated Pamela Werner’s case together for over ten days now, but there are still no clues. The British Municipal Council in Tianjin also sent detective R. H. Dennis to Beiping to help. It is said that they have decided to take photos of Pamela’s eyeballs because they must contain the image of the last person she saw. If they do this in a scientific way and enlarge the photo, they believe they can find out who the killer is. "

- Huabei Ribao Jan 19 1937