“Eleonora” is a short story by Edgar Allan Poe, first published in 1842 in Philadelphia in the literary annual The Gift. It is often regarded as somewhat autobiographical and has a relatively “happy” ending. The story follows an unnamed narrator who lives with his cousin and aunt in “The Valley of the Many-Colored Grass”, an idyllic paradise full of fragrant flowers, fantastic trees, and a “River of Silence”. It remains untrodden by the footsteps of strangers and so they live isolated but happy.
“Berenice” is a short horror story by Edgar Allan Poe, first published in the Southern Literary Messenger in 1835. The story follows a man named Egaeus who is preparing to marry his cousin Berenice. He has a tendency to fall into periods of intense focus during which he seems to separate himself from the outside world.
Penny Dreadful is an old term used during the nineteenth century to refer to cheap popular serial literature. Sort of like pulp fiction. It was also called penny blood, penny awful, or penny horrible. It means a story published in weekly parts, with the cost of one (old) penny. The main plot of these stories were typically sensational, focusing on the adventures of detectives, criminals, or supernatural entities.
This is exactly what Penny Dreadful was, and what it payed homage to. So we found some old stuff the series borrowed or was inspired by. And there is A LOT.