In Dangerous Water, penned by Ellen Dugan, dives deep into the unnerving territories of psychological suspense, blended with the eerie tranquility of a small coastal town setting. The novel weaves an intricate narrative that challenges perceptions, stirs hidden fears, and captivates with its richly painted characters and atmospheric tension.

The story revolves around Mia Gallagher, a young woman with a haunted past, who returns to her childhood home in the sleepy town of Seaside Hollow after a decade. The townsfolk are a medley of old faces and new, each adding layers of mystery and intrigue as Mia finds herself enmeshed in a labyrinth of local legends and real dangers. What begins as a tentative homecoming soon spirals into a chilling quest for truth involving a dark maritime history and contemporary environmental threats.

Dugan's prose is both evocative and razor-sharp, a tool that she employs masterfully to build a hauntingly beautiful seascape where the lines between myth and reality blur. The author’s background in environmental sciences enriches the novel, lending authenticity to the ecological nuances that form the backbone of the underlying mystery. The ocean is not merely a setting but a character in its own right, powerful and unpredictable.

The novel's suspense is tightly constructed, with well-paced revelations that prompt the reader to question everything right along with Mia. Each chapter adds a new piece to the puzzle, often looping back to reconfigure earlier assumptions in light of new evidence. Dugan expertly balances the suspense elements with emotional depth, exploring themes of loss, guilt, and redemption that add profound layers to Mia’s personal journey. Her relationship with her estranged father and her old high school flame, who now works as an environmental officer, introduces complex emotional dynamics that enrich the narrative.

Interestingly, Dugan does not shy away from leveraging small town dynamics as a pivotal element of storytelling. The claustrophobia of a close-knit community, where everyone knows each other and personal histories intertwine, creates a palpable tension that drives the narrative. This is particularly noticeable in the depiction of town gatherings and interactions within the local diner, where secrets are hidden behind tight-lipped smiles and seemingly innocuous exchanges carry weighty implications.

Supporting characters in In Dangerous Water are well fleshed out and contribute significantly to the storyline. From the enigmatic lighthouse keeper whose stories of the sea muddle facts with folklore, to Mia’s childhood friend who helps her navigate the perilous waters of her past and present, each character is meticulously crafted. They not just propel the main plot but also evoke a strong sense of place and community, integral to the novel's atmospheric thrust.

The element of environmental activism threaded through the narrative adds a layer of modern-day relevance that resonates with contemporary readers. Dugan’s portrayal of the conflicts between local traditions and modern realities reflects broader societal issues, making the novel not only a thrilling mystery but also a thoughtful reflection on sustainable living. This thematic depth does not overburden the narrative but rather enriches it, providing a sturdy framework upon which the suspense is masterfully hung.

However, some readers might find the pacing in the middle sections a bit sluggish as Dugan takes her time to explore the characters' backstories and the town’s history. While these elements are crucial for the depth and authenticity of the story, they could potentially detract from the suspense for those readers primarily engaged by the thriller aspect of the novel.

Overall, In Dangerous Water emerges as a compelling blend of environmental thriller and psychological suspense with a poignant touch of human drama. Ellen Dugan’s meticulous attention to detail, whether in character development or in setting the scene, creates a vivid tableau where the stakes are high, and the emotions are palpable. For fans of the genre looking for a story that both entertains and provokes thought, this novel is a deep dive worth taking.