There is a quasi-infinite catalogue of published Dracula fan-fiction out there. I don't intend for "fan-fiction" to come across as a value judgement, just an accurate description of what it is. Few other novels in the public domain continue to arrest the imagination of modern society quite like Bram Stoker's legendary book of Gothic horror, and I think it's great that people have re-interpreted and adapted the story in so many disparate ways over the last 120+ years.
I do not think that Dracula is a perfect novel, but as a colossal fan of it nonetheless I notice that modern Dracula storytellers have a tendency to revisit a small well of tropes over and over, many of which I am quite sick of, especially in works that claim to be accurately capturing the spirit of the original work. These include:
1. Removing the vampiric vulnerability to garlic, crucifixes, and other holy symbols to make them more like Anne Rice's vampires
2. Making explicit that Dracula and Vlad the Impaler are the same person, and also throwing in Elizabeth Bathory for some reason
3. Depicting Jonathan Harker as cowardly, unintelligent, overtly misogynistic, and a bad husband
4. Depicting Count Dracula as not evil, or at the very least misunderstood, and having his violent sexual advances towards Mina be welcomed by her
Freda Warrington's sequel Dracula the Undead (smartly subtitled as "A sequel to Dracula" rather than "The sequel", as was used by Dacre Stoker and Ian Holt's execrable and similarly-named Dracula the Un-Dead) does touch upon the last of these, which was frustrating, but the novel was such a gripping read that I'm willing to excuse it, and it was not handled in as unsavory a way as I have read or watched elsewhere.
Warrington's prose is not Bram Stoker's prose, it much is more cinematic and lurid, but it is sumptuous and Gothic nonetheless, and a perfect fit for the subject matter. Since we already know these characters, the book can get straight to putting them in horrid danger and building suspense. The Scholomance, alluded to twice by Stoker in his novel, is explored in greater detail here, to great effect. I cannot express how wonderful it is to read about vampires being overtly Satanic!
Now, the long-term problem of the cultural reputations of Jonathan Harker, Dracula, Mina, and the relationships between them - something that Francis Ford Coppola's film adaptation has a lot to answer for, as much as I love it. In the original novel, Count Dracula is unambiguously, unashamedly evil. Mina feels not a shred of attraction towards Dracula, and she is completely smitten and in love with her husband, and he with her. But in a hundred years of cinematic adaptations we have never had a single truly great Jonathan Harker depiction, and many great Draculas. Dracula is the star, he is dangerous, powerful, and mysterious, and he is a vampire, which is much cooler than not being a vampire. It's little wonder that he has become a well-liked character and Jonathan Harker has become something of a joke.
This novel ascribes a few flaws to Jonathan that aren't really there in the source material, but he gets over them through the course of the book. He is severely injured early on, and is not able to fight Dracula as effectively as he was the first time around. Mina despises Dracula, but despite herself comes to hold a certain attraction to him and starts to find redeeming qualities in him. This Dracula is evil and self-serving, but also merciful. His "vampiric baptism" of Mina in the original book is accurately depicted as sexual assault.
Even as distorted as these depictions are, this is BY FAR the closest these characters have come to their original versions in literature since Anne Rice rewrote the book on the vampire mythos in the late 70s. This is a testament to how overwhelmed Dracula the book has become by Dracula the cinematic figure, and how impressive it is that Warrington was able to shed much of this cultural baggage as well as she did to make a reasonably faithful sequel, the most faithful of any other book I've read.
And as taken as its own thing, Dracula the Undead is GREAT. It's bloody, thrilling, creepy, sexy, and deliciously Gothic, and I read the whole thing in one bite. Freda Warrington is a tremendously talented writer and I'm excited to read more from her in the future.