Hmmm, I'm going to mention more modern things, so this is not likely your cup of tea, as you especially mentioned Le Comte de Monte Cristo.
"The Lair of the White Worm," and "The Jewel of the Seven Stars," two lesser known stories by Bram Stoker. The first deals with, essentially, a Grendel tail. The latter is an excellent early mummy tale. The early mummies in fiction were usually seductive women, the Boris Carloff movies were what changed it to guys. The Jewel is famous for having to be rewritten because of a downer ending, and there's some who believe that it wasn't Bram Stoker that rewrote the ending(I prefer the new ending).
"Apocalypse Troll" or "Out of the Darkness" by David Weber. Not his best work, he's more known for his Honor Harrington series. But they are individual books, that can give you an idea if you like his writing style.
The Kydd series by Julian Stockwin and the Sharpe series by Bernard Cornwell. Both long series' set in Napoleonic times. The former deals with a pressed sailor going from landman to captain, the latter, a soldier in the army. Both are great series, and capture the flair of the era.
"The Completely Uninteresting and Unadventurous Tales of Fred, the Vampire Accountant," series, or the "Tome of Bill" series. Both are fun "loser vampire" series(vampire movies always deal with cool, attractive vampires...this is when the rest of us become vampires). The former deals with an accountant turned into a vampire, who, while completely boring, gets dragged into bizarre problems. The latter is a snarky DnD nerd that becomes a vampire.
https://www.amazon.com/Shadow-Moria...=1536116872&sr=1-6&keywords=sherlock+moriarty <---Because It's Elizabeth Bennett from Pride and Prejudice(in the 1810's) helping Sherlock Holmes(in the 1890's) catch Moriarty. I haven't read this, but the authors lack of understanding about the difference between those two era's should make that book hilarious.