Victorian Gothic

Poe wouldn't technically be classed as a Victorian author because he was American.
He falls into the American Dark Romanticism category, but worked during the time of Queen Victoria's Reign.

I'm going to research both the American context and the Victorian Era.

Science and Supernatural

http://www.bl.uk/romantics-and-victorians/articles/the-victorian-supernatural

http://www.victorianweb.org/victorian/religion/spirit.html

http://reframingthevictorians.blogspot.co.uk/2016/01/the-victorians-and-spirituality_15.html

'Spirit Photography'

Hoaxes?

http://blog.tavbooks.com/?p=909