"The Nosy Neighbor" by Nita Prose is a keenly observed and intricately plotted novel that transcends the ordinary boundaries of a traditional mystery. At its heart lies an exploration of loneliness, community, and the fine line between observation and obsession. This book manages to weave humor, suspense, and a cast of uniquely endearing characters into a tapestry that captivates from the first page to the last.

The story is delicately pivoted around Lucy Harper, a retired school librarian with a penchant for spying that peaks not out of malice but sheer curiosity. She inhabits her quiet suburban corner with an observant eye, armed with little more than binoculars and an insatiable need to piece together the lives of her neighbors. The charm of Lucy’s character lies not only in her quirks but also in her unwavering sense of morality and justice, which drives the narrative towards its climax.

Prose’s writing shines brightest when detailing Lucy’s internal monologues. There's a palpable tension that builds as she unearths secrets small and large, with the suspense neatly balanced by moments of genuine humor that emerge from the oddities of suburban life. Lucy's transformation from a recluse to a reluctant detective is elegantly portrayed, offering a rich study of character that many mysteries often overlook in favor of plot.

The array of supporting characters adds depth and a broad spectrum of perspectives to the canvas. From the seemingly perfect newlywed couple with ominous secrets to the grumpy next-door neighbor whose exterior belies a painful past, Prose crafts each character with a masterful depth that challenges the reader’s initial perceptions. This variety enriches the narrative, embodying a microcosm of society where each individual plays a pivotal role in the unfolding drama.

One of the novel’s significant strengths is its setting, which Prose uses to her advantage. The ordinary suburban backdrop, often considered mundane, is transmuted into an almost theatrical setting — a stage upon which each character plays their designated role, yet possesses the autonomy to break away from these constraints. The setting does not just serve a decorative purpose but becomes a lens through which the themes of privacy, voyeurism, and community are explored.

The plot of "The Nosy Neighbor" is meticulously structured, each chapter propelling the narrative forward without losing grip on the emotional undertones. However, it is not just a thriller; it is an examination of the human condition. How much of ourselves do we see in others? What are the moral implications of observing someone’s life without their knowledge? Prose does an excellent job of not only posing these questions but also weaving them into the fabric of the narrative, making the reader pause and ponder.

However, one may argue that the novel’s pace might feel sluggish to readers accustomed to more action-packed, fast-paced thrillers. Prose’s style emphasizes psychological depth and the slow build-up of tension, which might not cater to all tastes. But for those who appreciate a slow-burning fuse that leads to an explosive reveal, this book is a delightful fit.

Moreover, Prose’s dexterity with language is notable. Her prose is crisp and evocative, capable of turning a simple act of peeking through a window into a suspense-filled, morally grey action that pushes the plot significantly. Every element from the small town's local gossip to the descriptions of a chilly evening adds layers of authenticity and texture to the story, making the world of "The Nosy Neighbor" vibrantly alive and eerily relatable.

In conclusion, "The Nosy Neighbor" by Nita Prose is a compelling blend of suspense and humor, marked by profound character study and philosophical underpinnings. It's a novel that entertains while it makes one think, and its lead, Lucy Harper, is a character that remains with the reader long after the book is closed. This book is recommended for those who love their mysteries served with depth, complexity, and a touch of whimsy, making it a standout addition to the genre. Reflecting on the fragile constructs of the social fabric, Prose invites us to look closer, perhaps not just through the window, but also within ourselves.