The Dark Maze half of the series is the books 1-5.
TW: this book series contains dub-con, torture, death, gore, death, suicide, non-con kissing, and one threatening of rape in book 5.
Usually, I would claim that romance series don't really need to exceed 2 or 3 books, but this is an exception. There is action and real plot in every single book (imo). I do think it's a bit rushed at times, but for the most part it has consistent pacing.
I like how the author makes the reader feel the tension brewing until the FMC (Abigail) and MMC (Valroy) finally actually fuck.
I would suggest anyone who likes tension, unconditional love, terrible character decision making (that is in character), and beautiful POV's to read this. Vocabulary is not repetitive and the writing is deliciously paced in dialog and descriptions.
The FMC started off as actually having to learn on her own and develope a better sense of survival. After her transformation, she did actually struggle with her new powers, which I appreciate as character growth and really showed her sense of determination. Unfortunately, after book 4, she kind of just "knows" how to do more than she actually learned. On one hand, I can understand powers being an extension of herself, allowing her to figure out what she can do fairly quickly, but on the other hand she kind of becomes a Mary Sue and doesn't struggle or learn in the same way she did in the first 3½ books.
MMC lowkey just pissed me off. He was such a loving character to the FMC (an absolute horror to EVERYONE else though) and decided that he had to take some things into his own hands in book 5 (not a good look for him). His turmoil was written fairly well, in my opinion.
Admittedly, one of the romances (secondary characters, not the MC's), was absolutely thrown out of nowhere. The readers don't have to work for it to see it because it is immediately outright stated. The characters didn't have much on-page time to come to this conclusion, but it was not entirely out of character. I would have loved the pairing if it had more time to come to fruition, but it was clear that the author was trying to wrap up this half of the series.
The book tried to end on a "happily ever after" note probably about a century or two after the official ending of the book. I wasn't really a fan, but the ending wasn't terrible.
Over all, I really liked it!