Viola Grace's Lost Companion is a captivating blend of science fiction and romance, set in a universe where interplanetary travel and diverse species coexist. The novel explores themes of companionship, identity, and the pursuit of belonging, all wrapped in a narrative that is both engaging and thought-provoking.

The story begins with Riley, a Terran who signs a companion contract with a half-Hmrain, Lord Roth. The initial condition of "no sex" sets the tone for a relationship that is more about emotional and therapeutic connection than physical intimacy. This aspect of the story is particularly refreshing, as it challenges the often overused trope of romance being the primary focus in such narratives. Instead, Grace delves into the nuances of companionship, highlighting how two beings from different worlds can find solace and understanding in each other's presence.

Riley's journey is one of self-discovery and resilience. Her character is well-developed, showcasing a blend of vulnerability and strength. As she transitions from being Lord Roth's companion to living with Ranna on Arro, Riley's adaptability and resourcefulness come to the fore. Her experiences on Arro, a planet with a compatible population and a bond house, further enrich her character arc. The bond house, a unique concept introduced by Grace, serves as a metaphor for the connections we seek and the lengths we go to maintain them.

Ranna, the lady with wings and the daughter of the Overseer of Arro, is another intriguing character. Her relationship with Riley is portrayed with warmth and authenticity. They share a camaraderie that is both endearing and empowering, as they navigate the complexities of their world. The five years they spend together are filled with adventures, from attending shows to sharing crafts, painting a vivid picture of a life enriched by friendship and mutual respect.

The plot takes a dramatic turn when Riley is drugged and taken off-world, a twist that adds an element of suspense and urgency to the narrative. This incident serves as a catalyst for the story's climax, where Ranna's father, the Overseer, takes decisive action to retrieve Riley. His determination to find her underscores the novel's central theme of belonging and the lengths one will go to protect those they care about.

Grace's writing is both descriptive and immersive, drawing readers into a universe that is richly detailed and imaginative. Her ability to create a sense of place is evident in her depiction of Arro and its inhabitants. The cultural nuances and societal structures of this world are intricately woven into the narrative, providing a backdrop that is as compelling as the characters themselves.

In terms of thematic exploration, Lost Companion delves into the idea of identity and the search for one's place in the universe. Riley's journey is emblematic of this quest, as she navigates the challenges of being a Terran in a world that is both foreign and familiar. The novel also touches on the concept of freedom and autonomy, as Riley asserts her independence and makes choices that define her path.

Comparatively, Grace's work can be likened to the novels of authors such as Anne McCaffrey and Lois McMaster Bujold, who are known for their strong character-driven narratives set in expansive sci-fi universes. Like McCaffrey's Dragonriders of Pern series, Lost Companion explores the bonds between individuals and their environments, while Bujold's Vorkosigan Saga echoes in the novel's exploration of identity and belonging.

Overall, Lost Companion is a compelling read that combines elements of science fiction, romance, and adventure. Viola Grace has crafted a story that is both entertaining and insightful, with characters that resonate and a plot that keeps readers engaged from start to finish. The novel's exploration of companionship and identity is both timely and timeless, making it a worthy addition to the genre.

For readers seeking a story that goes beyond the conventional boundaries of sci-fi romance, Lost Companion offers a refreshing perspective. It is a testament to the power of connection and the enduring human spirit, set against the backdrop of a universe that is as vast as it is intriguing.