Abena Ambrosa's "Once Upon A Lie" is the first installment in the 'Once Upon a Billionaire' series, offering a thrilling blend of romance and suspense that transports readers deep into the entwined lives of its complex characters. This novel, with its rich layers of deceit, redemption, and love, serves not only as a storytelling vessel but also as a profound exploration of the human condition.

The story introduces us to Josephine Hart, a young woman whose life is anything but straightforward. Her existence is permanently altered following a mistaken identity that entangles her with Dominic King, a billionaire business mogul renowned not just for his financial acumen but also for his dubious moral compass. Dominic's initial allure is shaded by secrets, presenting an intriguing aura of danger that Josephine finds increasingly irresistible. As layers of deceit unravel, the protagonist is caught in a web of lies so intricate that discerning truth from deception becomes a Herculean task.

Ambrosa excels in crafting a narrative that is both vibrant and poetic. The prose in "Once Upon A Lie" is beautifully structured, weaving a tapestry of vivid scenes and evocative emotions that push the boundaries of a typical romance novel. It isn't solely about the blooming affection between Josephine and Dominic; it's equally focused on their individual journeys, marked by personal revelations and growth. This depth makes the story resonate on several levels, intertwining love’s transformative power with the harsh realities of betrayal and trust.

Character development is another forte of this novel. Josephine, as the heart of the story, is portrayed with a nuance that captures both her vulnerability and her strength. Her evolution from a naive girl into a woman who confronts her reality head-on is compelling and richly detailed. Dominic, on the other hand, epitomizes the quintessential ‘bad billionaire’ archetype but with unexpected layers that begin to unfurl as the story progresses. His character is effectively used to explore themes of repentance and the impact of past traumas on personal ethics and choices.

Supporting characters are not merely ornamental; they contribute significantly to the storyline's progression and the main characters' development. Each subplot ties back to the core themes of the book, enhancing both the emotional stakes and the narrative’s pace. From Josephine’s loyal friend Mira to Dominic’s enigmatic family members, every character adds a unique shade to the story’s canvas.

The setting of the novel shifts between opulent urban landscapes and serene, shadowy locales, effectively reflecting the dualities that define the lives of Josephine and Dominic. Ambrosa's skill in setting descriptions ensures that each location almost acts as a separate character, influencing the mood and the actions of the story inhabitors. The vivid imagery and meticulously described environments help in immersing the reader into the world she has created.

Themes of trust, betrayal, and redemption are skillfully woven throughout "Once Upon A Lie". The title itself is an apt encapsulation of the narrative’s central conflict—the lies we tell ourselves and others, and how these fabrications can lead to both destruction and eventual reconstruction of one’s self and relationships. Ambrosa provocatively questions the morality of her characters, setting up a moral playfield where rights and wrongs are not clearly defined, compelling the reader to consider difficult questions about ethics and empathy.

However, the novel is not without its minor flaws. At certain junctures, the pace seems to lag, especially during the middle chapters where the internal monologues of the characters tend to overshadow the action. Furthermore, while the plot twists are generally well-executed, a few seem overly convenient and detract from the overall believability of the scenario. Nevertheless, these issues do not significantly mar the literary journey that Ambrosa embarks upon.

In summary, "Once Upon A Lie" by Abena Ambrosa is a compelling start to the 'Once Upon a Billionaire' series. It is a richly woven tapestry of intricate characters, heartfelt emotions, and profound life lessons. The narrative invites readers not only to be swept away by the romance but also to ponder more significant moral questions lingering beneath the surface. This book is recommended for readers who enjoy complex characters and are looking for a romance that delivers more than just a fairy-tale ending. With its intriguing blend of mystery and romance, this novel firmly holds the reader's attention to the very last page.