Best Kept Secret, authored by Maya Alden, emerges as a compelling narrative that threads the delicate balances of suspense, drama, and the intricacies of relationships. The novel carved out its niche by intertwining intricate character development with a story line that not only engrosses but also challenges the reader’s perception about secrecy and truth.

The story pivots around the life of its protagonist, Eliza Hart, a successful New York-based lawyer whose seemingly perfect life begins to unravel when she receives a mysterious letter hinting at hidden facets of her late mother’s life. This letter instigates a series of events that push Eliza to embark on a journey not just back to her quaint hometown in Virginia but into the depths of her own past and her mother's secretive world. The plot develops steadily, with layers of stories unfolding through flashbacks and present-day dilemmas that Eliza faces, which Alden portrays with finesse and sensitivity.

Alden's narrative technique deserves particular acclaim. She deftly switches timelines and perspectives, maintaining a seamless flow that keeps the reader engaged and curious. This dynamism in narrative not only enriches the reading experience but also provides a deeper understanding of each character. The character of Eliza, for instance, is portrayed with a rich complexity. Her struggles with her identity, her perception of her mother, and her difficulties in trusting others, including her own husband, are depicted with profound emotional depth and psychological insight.

Perhaps the most striking attribute of Best Kept Secret is its exploration of themes such as the impact of unresolved pasts and the power of secrets. Alden explores how secrets, when kept too long, can fragment relationships and individual identities. This thematic exploration raises poignant questions about the nature of truth and deception, both self-imposed and external. Moreover, the ethical dilemmas that Eliza faces, resonate well with real-world scenarios, making the narrative not only thrilling but also thought-provoking.

The setting of the novel is also meticulously crafted. The contrasting environments of bustling New York and the serene Virginia town mirror the internal conflict within Eliza and effectively symbolize the dual life she perceives her mother to have led. Alden's descriptive prowess paints these settings vividly, using the environment almost as a character in its own right, influencing and echoing the sentiments of the narrative.

Moreover, the supporting characters are not overshadowed but instead are integral to the unfolding of the plot and to Eliza’s transformation. Characters like Aunt Maggie, who harbors her own perceptions of Eliza's mother, and Michael, Eliza’s estranged husband, who becomes an unexpected ally in her quest, enrich the story greatly. Their perspectives and revelations are crucial, providing twists and enhancing the suspense that captivates until the final pages.

However, it’s not just the plot and character development that merit applause but also Alden's linguistic style. Her prose is eloquent yet accessible, making complex psychological landscapes easy for the reader to navigate. The dialogues, crisp and natural, enhance the realism of the characters’ interactions and help in fleshing out their personalities and motivations.

The pacing of the book is another of its strengths. Alden manages the escalation of suspense masterfully, making Best Kept Secret a genuine page-turner. Just as the tension reaches its peak, the resolutions come as satisfying revelations that tie up the intricate plot effectively, though not all resolutions come as clear-cut answers, prompting reflection and leaving some interpretation to the reader. This aspect might not sit well with all readers, but it undeniably adds depth to the narrative, making it linger in the mind well after the last page is turned.

On the whole, Best Kept Secret by Maya Alden is an excellently penned novel, combining mystery, drama, and a deep dive into human emotions and relationships. It’s a perfect blend of a heart-racing thriller and a profound psychological exploration. For those who cherish novels that not only entertain but also engage with enduring existential questions, Best Kept Secret is undeniably a must-read. It skillfully captures the essence of its themes while providing a thoroughly enjoyable literary experience. Alden, with this book, not only entertains but also invites her readers to examine the secrets they hold themselves.