This isn't the first time a writer attempts to give Grendel a POV to tell his side of the story, but it's the first time someone makes Grendel into a woman.
In the original epic poem, Beowulf, it's not clear what kind of creature Grendel is, at least not to lay readers like me, for I'm sure scholars do have a better idea of what Grendel is. Personally, I visualise him as a monstrous giant, troll-like and shadowy, based on the Seamus Heaney translation that is the only one I've ever read, which gives Grendel a shadowy humanlike appearance in the only passage in the poem where he is described (somewhat). This monster is said to descend from Cain, the first murderer in history according to the Bible, and is surrounded by the imagery of the gigantic and evil Antediluvian offspring of the fallen angels and human women told in the Book of Genesis, and following Cain's legacy, is envious and resentful of humanity as he thinks they're happy and blessed by God whilst he's cursed, lonely, and hated, so he attacks and murders them in revenge, only to eventually face Beowulf, the hero of light, and be defeated.
I think knowing this Biblical subtext is immensely helpful to contextualise the changes Allison Tebo has introduced in her retelling, especially for those readers that aren't familiar with Judeo-Christian lore and thus might feel Break the Beast has too much religion for their comfort. The original poem itself contains the struggle of Pagan and Christian worldviews and a strong religious imagery, so even though Tebo did make this a somewhat more Christian story with her spin on it, it's not like that came out of the blue and with no basis on the original epic.
That said, Break the Beast is Grendel's story. And here it's a female Grendel that we meet. Why and how? Because of "Beauty and the Beast," of which this retelling has some elements, but not that many as it is fundamentally a Beowulf retelling first and foremost, so I don't recommend you approach this expecting B&B. However, thematically the fairy tale does fit, because what it gets from B&B is Grendel's redemption.
Normally, what authors get from B&B is the romance, the love that transforms, but rarely do they understand the redemptive theme of the fairy tale. Tebo did, much to my joy! She took the Cain & Abel biblical story from the epic poem and decided to redeem Grendel through love. And no, I'm not talking about romantic love here, praise Jesus. Can you imagine a romance between Grendel and Beowulf? *quietly makes the vade retro Satana sign at the thought.*
Remember Grendel's motives for being so murderous and destructive in the epic? It's due to a curse on the little monster. And remember Grendel's mother that eggs him on in the poem? She's even worse than him. Tebo takes these elements to create a tale of compassion for the cursed, the downtrodden, the fallen, and thus we see genuine love and care seeping into Grendel's corrupted core and transforming her, redeeming her, making her rise above and beyond her twisted origins. I'm not going to describe it at length, but suffice to say that the Grendel you'll meet here is like the Grendel in the poem at the start, but different by the end. And that is also because she has something of another character from the poem I won't name to avoid spoilers.
In the poem, Beowulf has three tasks, and thus the poem is divided in three parts dedicated to each monster slayed. Accordingly, this retelling also has 3 parts, and it also follows the three monster-slaying storyline, with differences. The timeline is also altered because the poem spans more time and goes into Beowulf's old age, which this retelling doesn't. The finale is also different, and there's where I'm not entirely happy. I'm happy with Grendel's transformation, yes, it's touching and well-written, but not happy with Beowulf's ending, as I believe that last-minute twist shouldn't have been introduced.
I also would've preferred if the authorial notes talked more about the process of creating this story and why this went for redemption instead of giving so much time to explaining the change of place names. I mean, how is it relevant that Heorot was changed to Trollhattan exactly? Judging by the other reviews, I seem to be the only one who understood what the aim of the story was, and that's merely because I'm familiar with Beowulf the poem and the Biblical subtext plus the fairy tale, which other readers won't be, so an explanation in the authorial notes would've been much more useful, in my opinion.
Anyway, I came out of this mostly satisfied, niggling ending mindbug aside. I've had my share of B&B retellings, but so far I've not found one that doesn't include romance of some sort, so that's my biggest source of happiness. "Wait," you'll say, "can B&B actually work without romance between Beauty and Beast?" And my answer is a resounding It can! Because love isn't only romance, love has more manifestations than that between two individuals for sexual purposes. "Love is patient and kind." And it's this patient kindness what makes Grendel become what she does here, the same patient kindness that uncurses Beast. So, yes, love doesn't need to be romantic to break the beast, it only needs to exist and be shown.
4.5 stars it is!
(B&B Fangirly Post-Script: Pssst, if some of my author friends want to write a bromance B&B retelling, I'm all ears and promise to cheerlead you for life!)