River Justice by B.J. Daniels marks yet another thrilling entry into the realm of romantic suspense, a genre that Daniels has mastered over her prolific writing career. This novel not only promises intrigue and danger but also delivers a deep dive into complex relationships and emotional healing, wrapped up in the scenic but deceptive calm of Montana's rugged landscapes.

The story centers around the fiercely independent Sterling McCallum, a character whose resilience and vulnerability are penned with such authenticity that readers will find her both relatable and inspirational. Having returned to her hometown of Ambush Valley to resolve her past traumas and to reclaim her life, Sterling's journey is abruptly tangled with a series of mysterious events that begin with the discovery of a body in the river near her property.

The local sheriff, Niall Hamarsson, emerges as both an ally and a potential love interest. His introduction into the narrative is seamless, providing a counterbalance to Sterling's more impulsive nature. Daniels expertly crafts Niall with a compelling backstory of his own; he is not just a supporting character but is someone with his own demons and aspirations. The dynamic between Sterling and Niall is charged with an undercurrent of romantic tension, yet it is their joint quest for truth and justice that drives their relationship, making it feel real and earned rather than just a convenient plot device.

Daniels’ depiction of Ambush Valley enriches the novel, transforming the setting into a character in its own right. With vivid descriptions of sprawling ranches overshadowed by towering mountains, the environment does more than just serve as a backdrop. It influences the story’s mood and mirrors the tumultuous unfolding of events. This detailed setting, combined with the author's skillful pacing, ensures that the suspense builds in a way that is almost palpable, keeping the readers on the edge of their seats as they flip through the pages.

An aspect where Daniels excels is her ability to weave complex narratives that explore not just the crime or mystery at hand, but also larger social issues. In River Justice, themes such as redemption and reconciliation with one's past are explored with sensitivity and depth. The personal growth of both Sterling and Niall parallels the procedural aspects of solving the crime, making for a deeply satisfying read on several levels.

The secondary characters are not mere fillers; each one adds layers to the plot or to the main characters' understanding of their world. From family drama to old rivalries, Daniels uses these interactions to reveal further depths to Sterling and Niall, and by extension, to the story itself. This technique not only enhances the main narrative but enriches the readers’ investment in the world Daniels has created.

However, it’s worth noting that while the plot is compelling and the character development is robust, some twists might feel predictable to veteran readers of the genre. Despite this, Daniels manages to keep the journey interesting through her adept use of dialogue and action sequences that are both dynamic and believable. The climactic resolution, while perhaps anticipated, is satisfying, none-the-less, wrapping up the threads of the story in a manner that feels conclusive while still leaving room for potential future explorations.

Furthermore, the romantic elements, while integral, never overshadow the mystery; rather, they complement it. The slow burn nature of Sterling and Niall's relationship will appeal to readers who appreciate a romance that feels like it's part of the characters' development, not just a compulsory inclusion in the genre formula.

In conclusion, River Justice by B.J. Daniels is a commendable addition to the genre of romantic suspense. With its engaging characters, evocative setting, and well-paced plot, it offers both excitement and emotional depth. This book is a must-read for fans of the genre and a good pick for those new to Daniels’ extensive body of work. While the mystery elements might not surprise all, the journey there is captivating, making this novel a rewarding read.