I've got a nice obscure one for you. It's called The Beetle: Mystery and it was written in 1897 by Richard Marsh. Now, the novel itself is not that great in my humble opinion, but get this - it was released in the same year as Bram Stoker's Dracula and actually out-sold it! Well, at least initially, but this is still incredible if you think about it. This obviously didn't last long and very few people know about The Beetle, compared to Dracula, but I still find it interesting.