As we speak my little treasure of a book mark is in Varney the Vampire or, The feast of Blood, by James Malcome Rymer.
It is a colossal book comprised of 'penny dreadfuls , published in 1845
Penny Dreadfuls are chapters written and sold in the streets for a penny. Every week there was a new chapter.
There are the precurser to Bram Stoker