Book Review: Greenteeth by Molly O’Neill

I received a review copy from the publisher. This does not affect the contents of my review and all opinions are my own.

Greenteeth by Molly O’Neill

Mogsy’s Rating: 4 of 5 stars

Genre: Fantasy

Series: Stand Alone

Publisher: Orbit (February 25, 2025)

Length: 320 pages

Author Information: Website

Here I go again, writing a review for another historical fantasy novel inspired by fairy tales and folklore. That said, every so often, a book will emerge that puts a fresh spin on an old story or bases its premise on lesser-known mythological creatures. I, for one, had never heard of Jenny Greenteeth, or Wicked Jenny, before picking up Greenteeth by Molly O’Neill. A kind of bogeyman-type water monster from English folklore, her name was used to warn careless children away from the treacherous shores of lakes and rivers, lest Jenny pulls them in and drowns them. Huh. It’s always great to learn something new.

Obviously, the novel Greenteeth centers on this terrifying figure, who is typically depicted as an evil hag ready to snatch her unsuspecting young victims and drag them into the murky depths. O’Neill, however, prompts readers to look at Jenny in a whole new light. She’s a monster, all right. But monsters can have feelings too, and they can sometimes be the hero instead of the villain. Living in her secluded lake, Jenny can get lonely. And whenever a human wanders close to her abode, she just can’t help her curiosity.

One day, her inquisitive nature leads to a decision that changes everything. Accused of witchcraft, a woman named Temperance from a nearby village is thrown into the lake by an angry mob led by their fanatical new preacher. Against her better judgment, Jenny chooses to save her, sheltering Temperance and letting her recover in her lair. Soon, the two of them find themselves in an alliance against an emerging foe that threatens both Jenny’s lake and Temperance’s family. Bound by magic, the two of them seek help from Brackus, a traveling goblin trader who deals in magical reagents and information. The trio next sets out on a quest to save their home, a journey that takes them across the lush British landscape and even to the very heart of the faerie realm.

There’s a lot to love about Greenteeth. The world-building is particularly robust, immersing readers in its rich atmosphere as well as the myths that inspired the characters and setting. The author doesn’t skimp on the details; you’ll notice how elements from all kinds of sources make their way into the novel, including Arthurian legends, Old English literature, Celtic mythology, and real history. Her prose is also very well suited to the vibes she wants to convey—a world that feels both grounded and magical, neither fantasy nor reality but straddling that in-between space, giving it all a dream-like quality.

And yet, this approach also has the downside of making the plot feel overly simplistic, almost like a children’s tale. This became especially true when Jenny, Temperance, and Brackus were tasked to do a bunch of what were essentially fetch quests, a narrative structure that’s both formulaic and predictable. At times, even the characters’ personalities felt underdeveloped, reduced to broad emotional strokes that, unfortunately, ended up defining them. One of the story’s most significant conflicts, for example, stemmed from little more than Jenny throwing a massive temper tantrum. While it’s an incredibly effective way to humanize our monstrous protagonist, I confess to being somewhat disappointed that, under all those sharp edges which made Jenny so mysterious and intriguing, all we got was a petulant child.

Still, for a debut novel, Greenteeth is an impressive achievement and an excellent entry into its genre category. Molly O’Neill’s love of fantasy and folklore is clear from her descriptive prose, as is her affection for the legendary figure of Jenny Greenteeth, whom she writes about with care and compassion. Sure, there were a few things that could have used more polish, but despite these flaws, Greenteeth showcases a promising new voice in fantasy. While it might not be anything groundbreaking, I found it to be a very worthwhile and enjoyable read.