Castle Rouge (Irene Adler Series #6) Book

I was disappointed with this book. It's the second part of the story that began in book #5 in this series, Chapel Noir. While I thoroughly enjoyed Chapel Noir, I felt that Castle Rouge stretched things way too far - and far too into the realms of disbelief. While I can easily imagine Irene, Godfrey, and Nell traipsing across Europe, solving crimes, and foiling Sherlock Holmes, Castle Rouge's descent into Satanist sex cults led by a young Rasputin (who is actually also Jack the Ripper!) was just too fantastical. I also didn't enjoy the fact that the villains were merely bad guys recycled from previous books in the series, and whose only motivations for their acts seemed to be 1. Evilness and 2. Dislike of Irene. Lastly, there were the similarities between this tale and Bram Stoker's Dracula. I have mixed feelings about that. I have read Dracula numerous times, so I was able to see both the obvious references and the far more subtle references. Having Bram Stoker as a character in the tale (who is inspired by his experiences and later bases Dracula on them) is, in one sense, quite clever. On the other hand, taking so many aspects of Dracula and incorporating them into Castle Rouge seems rather a bit like cheating.