Patricia Briggs' Moon Called, the first installment in the Mercy Thompson series, is a captivating urban fantasy novel that introduces readers to a world where the supernatural seamlessly intertwines with the mundane. Set in the Tri-Cities area of Washington, the book follows Mercedes "Mercy" Thompson, a Volkswagen mechanic with a unique heritage. Mercy is a walker, a rare magical being with the ability to shift into a coyote at will. This ability places her in a unique position within the supernatural community, which is populated by werewolves, vampires, fae, and other mystical creatures.

One of the most compelling aspects of Moon Called is its richly developed protagonist, Mercy Thompson. Unlike many urban fantasy heroines, Mercy is refreshingly grounded and relatable. Her skills as a mechanic and her independence are highlighted throughout the novel, making her a strong and capable character who doesn't rely solely on her supernatural abilities. Mercy's voice is authentic and engaging, drawing readers into her world with a blend of wit, intelligence, and vulnerability. Her interactions with the supernatural beings around her are nuanced, reflecting her deep understanding of the complexities of their world.

The novel's plot is driven by a series of events that begin when a young werewolf named Mac seeks refuge at Mercy's garage. This encounter sets off a chain of events that plunges Mercy into the dangerous politics of the werewolf packs. Briggs masterfully weaves a tale of intrigue and suspense, as Mercy navigates the treacherous waters of supernatural alliances and rivalries. The pacing is brisk, with enough twists and turns to keep readers on the edge of their seats. The mystery at the heart of the story is well-crafted, with clues and revelations that unfold organically, keeping the reader engaged and invested in the outcome.

Briggs' world-building is another standout feature of Moon Called. The author creates a universe that feels both familiar and fantastical, blending elements of the real world with the supernatural in a way that feels seamless and believable. The Tri-Cities setting is vividly described, providing a tangible backdrop for the story's events. The supernatural elements are intricately detailed, with each species having its own unique characteristics and societal structures. Briggs' attention to detail adds depth and richness to the narrative, making the world of Mercy Thompson one that readers will want to return to again and again.

The themes explored in Moon Called are both timeless and relevant. At its core, the novel is about identity and belonging. Mercy's dual nature as a walker and a human places her in a liminal space, where she must navigate the complexities of both worlds. Her struggle to find her place within the supernatural community mirrors the universal human experience of seeking acceptance and understanding. The novel also touches on themes of loyalty, friendship, and the importance of standing up for what is right, even in the face of overwhelming odds.

Character development is a key strength of Briggs' writing. In addition to Mercy, the supporting cast is well-developed and memorable. Adam Hauptman, Mercy's werewolf neighbor and Alpha of the local pack, is a complex character whose relationship with Mercy evolves throughout the novel. Their dynamic is one of mutual respect and underlying tension, adding an intriguing layer to the story. Other characters, such as Samuel, Mercy's former love interest, and Zee, her gremlin mentor, are equally well-drawn, each contributing to the richness of the narrative.

In comparison to other urban fantasy series, such as Jim Butcher's Dresden Files or Charlaine Harris' Sookie Stackhouse series, Moon Called stands out for its strong female protagonist and its focus on the intricacies of supernatural politics. While Butcher's series is known for its action-packed plots and Harris' for its Southern charm, Briggs' novel offers a more introspective and character-driven approach. Mercy's journey is one of self-discovery and empowerment, making her a relatable and inspiring heroine for readers.

Overall, Moon Called is a compelling and engaging read that will appeal to fans of urban fantasy and supernatural fiction. Patricia Briggs has crafted a world that is both enchanting and dangerous, populated by characters who are as complex as they are captivating. The novel's blend of mystery, action, and character development makes it a standout in the genre, and a promising start to a series that has garnered a devoted following. Whether you're a longtime fan of urban fantasy or new to the genre, Moon Called is a book that is sure to leave a lasting impression.