Alexis Grace's Killer of Mine is a gripping narrative that intertwines the psychological tension of a crime thriller with the emotional depth of a New Adult romance. The book's premise is immediately intriguing: Freya, the daughter of the infamous Cross-Cut Killer, finds herself entangled with a team of FBI agents who have been relentlessly pursuing her father. This setup promises a blend of suspense, romance, and personal conflict that Grace delivers with considerable skill.

One of the most compelling aspects of Killer of Mine is its exploration of identity and the burden of legacy. Freya's character is a study in contrasts. On one hand, she is a competent detective living under a false identity, striving to distance herself from her father's horrific legacy. On the other, she is a young woman grappling with the isolation that comes from living a lie. This duality makes Freya a fascinating protagonist. Her internal struggle is palpable, and Grace does an excellent job of portraying her as a multi-dimensional character who is both vulnerable and resilient.

The dynamic between Freya and the FBI agents—River, Oz, Elijah, and Jude—is another highlight of the novel. Each agent brings a unique personality and skill set to the team, and their interactions with Freya are charged with tension and chemistry. The "enemies-to-lovers" trope is well-executed here, with Freya initially at odds with the agents due to their shared history and conflicting goals. However, as the story progresses, mutual respect and attraction develop, adding layers to their relationships.

Grace's decision to incorporate a "why choose" romance is a bold one, and it adds an intriguing dimension to the narrative. The idea that Freya could potentially have more than one love interest is handled with nuance, avoiding the pitfalls of jealousy and competition that often plague such storylines. Instead, the focus remains on the emotional connections and the ways in which each character complements Freya's journey. This approach not only enriches the romantic subplot but also reinforces the theme of finding one's place in a world that feels inherently hostile.

Thematically, Killer of Mine delves into the nature of evil and the impact of familial ties. Freya's relationship with her father, though not directly explored in the present timeline, casts a long shadow over the narrative. The psychological scars left by her father's actions are evident in Freya's interactions and decisions. Grace uses this backdrop to explore questions of nature versus nurture, and whether one can ever truly escape the sins of their parents. This thematic depth elevates the novel beyond a simple thriller or romance, offering readers a thought-provoking experience.

In terms of pacing, the novel strikes a balance between action and introspection. The plot moves swiftly, with enough twists and turns to keep readers engaged. Grace's writing is crisp and evocative, particularly in scenes that delve into the darker aspects of the story. The "darker moments" mentioned in the blurb are handled with care, ensuring that they serve the narrative rather than merely shock the reader. However, potential readers should heed the trigger warnings, as the book does not shy away from exploring difficult themes.

Comparatively, Killer of Mine shares thematic similarities with works like Karin Slaughter's Pretty Girls and Lisa Gardner's Find Her, both of which explore the psychological impact of crime on families. However, Grace's novel distinguishes itself with its New Adult focus and the inclusion of a polyamorous romance, which adds a fresh twist to the genre. The book's ability to blend these elements seamlessly is a testament to Grace's skill as a storyteller.

Overall, Killer of Mine is a compelling start to a planned trilogy that promises to delve deeper into the complexities of its characters and the overarching mystery of the Cross-Cut Killer. While the book does not end on a major cliffhanger, it leaves enough unresolved threads to entice readers to continue with the series. For fans of romantic suspense and psychological thrillers, Alexis Grace's novel offers a satisfying blend of both, with enough emotional depth and narrative intrigue to keep readers invested from start to finish.

In conclusion, Killer of Mine is a standout entry in the New Adult genre, offering a unique blend of romance, suspense, and psychological drama. Its well-developed characters, engaging plot, and thematic richness make it a must-read for anyone looking for a story that challenges and entertains in equal measure. Whether you're drawn in by the promise of romance or the thrill of the chase, this book is sure to leave a lasting impression.