Healer’s Call by A.J. Manney is a compelling piece of fantasy that intricately weaves elements of magic, mystery, and medicine against a vividly built world that both enthralls and engages from the first page. This novel, rich with unique lore and captivating characters, explores the demanding life of its protagonist, Eiren, who is both a gifted healer and a reluctant hero thrust into the complexities of a land on the brink of turmoil.

At its core, Healer’s Call is an exploration of the burdens of giftedness in a world where magic is both a blessing and a curse. Eiren, the central character, is deeply empathetic—a trait that Manney uses to great effect throughout the novel. Eiren's ability to heal is not merely a mechanical skill but connected deeply to her emotional and physical strength, which paints her as both powerful and achingly human. Her struggle with the limitations of her own powers brings a poignant touch to her narrative, making her an engaging and relatable protagonist.

Manney's world-building is something to be particularly lauded. The author constructs a richly detailed setting, complete with its own set of rules, cultures, and histories. There is a tangible atmosphere in the descriptions of bustling marketplaces, quiet villages, and ominous forests. This attention to detail is not just for ambiance but serves the dual purpose of propelling the plot and deepening the reader’s understanding of the socio-political tensions that underlie Eiren’s journey.

The novel is not without its twists and turns. The plot weaves through complex moral dilemmas and thrilling encounters, maintaining a tight pace that keeps the pages turning. One of the most gripping elements of the narrative is the concept of “The Decay,” a mysterious affliction that threatens the kingdom. Eiren’s confrontation with this plague, which blends the mystical with the medical, is both horrifying and fascinating. The disease serves as a crucial catalyst in the plot, pushing Eiren beyond the borders of her comfort zone and into the roles of detective and warrior, as much as a healer.

The supporting characters are equally well-drawn. From Cael, the stoic warrior with a past entwined deeply with Eiren’s own, to the mercurial sorceress Nyneve, who provides a darker counterpoint to Eiren’s healing prowess. Each character is given a vitality that adds depth to the story, creating a tapestry of interactions that highlight various aspects of Eiren’s personality and challenge her preconceptions and values. Their relationships are complex, evolving with the story in ways that are unexpected yet utterly convincing.

Moreover, themes of power and responsibility are recurrent, painting a complex picture of what it means to wield great power and the sacrifices that come with it. Manney doesn’t shy away from the darker aspects of this, delving into the corruption, fear, and betrayal that can fester in such environments. This exploration adds a layer of philosophical reflection to the book that elevates it from a simple fantasy narrative to something more thought-provoking.

Perhaps the book’s only shortfall comes in the form of its dense lore, which can at times feel overwhelming to readers not accustomed to heavily built worlds. The pacing, while generally tight, does suffer occasionally under the weight of extensive backstories and world details. However, for fans of deep and intricate fantasy, these characteristics will likely add to the book's charm rather than detract from it.

In conclusion, Healer’s Call by A.J. Manney is a striking addition to the fantasy genre, offering readers a complex heroine, a reflective plot, and a world so vivid it practically leaps off the page. It skillfully combines elements of magic, adventure, and intrigue, making it a recommended read for anyone looking for a new fantasy world to get lost in. The book carefully balances action with introspection, creating a rich, immersive experience that resonates emotionally and intellectually with its audience. Eiren’s journey is not just one of external adventures but an internal quest towards understanding the true nature of strength, making Healer’s Call a uniquely compelling read filled with heart, thought, and magic.