In the world of romantic suspense, Piper Stone's novel The Wiseguy serves as a captivating blend of grit, tension, and explosive chemistry that keeps readers on the edge of their seat from start to finish. This gripping narrative not only delivers a thrilling ride but also intricately explores the complexities of trust, redemption, and survival against a high-stakes underworld backdrop.

The Wiseguy revolves around the entwined lives of Sofia Romano, a brilliant young art curator with a shadowy past, and Nico DeLuca, a reputed mob enforcer who straddles the thin line between fierce loyalty and personal honor. The story begins when Sofia’s latest project – the exhibition of a rare collection of Renaissance artworks – inadvertently entangles her in the murky waters of criminal enterprises. When Nico is dispatched to oversee certain 'interests' within the same art exhibit, their worlds collide in unpredictable ways. What follows is not just a story about the mob and art theft, but a deeper exploration into the psychological changes both major characters undergo as they pull each other into their respective orbits.

Stone's writing style is brisk and visually rich, making the backdrop of crime-ridden New York come alive with vibrant intensity. The author’s experience with suspense genres shines through as she meticulously weaves multiple subplot threads, enhancing the primary storyline without overwhelming the reader. The pacing of the book is particularly commendable, maintaining a taut balance between rapid-fire action and slow-burn emotional exchanges that develop the characters’ relationship.

One of the novel's strongest aspects is its character development. Sofia Romano is portrayed not just as a damsel in distress but as a resilient survivor with her own shades of grey. Her past is doled out in spoonfuls through tense flashbacks that sync perfectly with the current events, enriching her character arc. Nico DeLuca, on the other hand, epitomizes the anti-hero archetype. He's tough, enigmatic, yet distinctly vulnerable when it comes to his close-knit family and eventually, Sofia. The dichotomy of his brutal profession juxtaposed with his almost naive sense of justice and protection towards Sofia adds layers to his character that are both fascinating and believable.

The romance between Sofia and Nico doesn't conform to typical genre tropes. It's raw, complicated, and filled with perilous undertones. Their relationship develops under tension and uncertainty which Stone skillfully uses to build a palpable sexual and emotional tension, making their moments of vulnerability hit hard. The dialogue between them crackles with intensity, laden with unspoken truths and a fierce longing that is as much a product of their personal isolation as their immediate dangers.

Supporting characters in The Wiseguy are equally well-crafted, from Nico's mobster family members to Sofia’s art world allies, all adding a rich tapestry to the narrative. Notably, each supporting character feels essential to the plot, influencing the protagonists’ decisions and the consequent twists the story takes.

Moreover, Stone does not shy away from the darker aspects of mafia life, portraying violence and betrayal with a raw honesty that can be jarring yet is essential for the story’s authenticity. This realism helps ground the sometimes-over-the-top elements inherent in mob-related dramas, making the peril feel genuine and the stakes higher.

However, if there's any point where the novel might face criticism, it could be in its final act where the resolution feels somewhat rushed. Certain revelations and character decisions come at a breakneck pace that, while exhilarating, leaves a few emotional nuances not fully explored. This, however, is a minor quibble in an otherwise tightly written narrative.

In conclusion, The Wiseguy by Piper Stone is a compelling blend of crime, passion, and thrill that enthralls and entertains in equal measure. With its complex characters, engaging plot, and intense emotional depth, the novel stands out as a significant work in the genre of romantic suspense. For readers who appreciate a story that combines the adrenaline rush of danger with the heat of incongruent love, The Wiseguy is undeniably a must-read.