Nocturne, Opus 1: Sea Foam is a thrilling international medical eco-thriller set across the picturesque landscapes of France, Belgium, Spain, Italy, Monaco, and the United States. The story begins with a mysterious disappearance of a college student collecting water samples, followed by the collapse of another on a sea foam-covered beach. Young adults are dying at coastal resorts, and the cause is unknown.

DRS. Kate and Jake Connors are research professors at the Atlantic University Institute, dedicated to peacefully resolving international conflicts caused by climate change. They also serve as covert agents for a secretive subdivision of the Institute known as the Agency. The Agency's mission is to investigate and eliminate threats to the environment, with agents posing as visiting professors and graduate students near crisis areas, sometimes walking the thin line between activists and extremists.

While vacationing at Venice's Lido Beach, Kate and Jake witness an attack by a normally passive waterborne bacterium. Along the shores of the Mid-Atlantic States and Coastal Europe, one in ten people begin dying from exposure to the bacteria, all of whom are young adults in their twenties and thirties. The CDC and WHO predict the potential death of an entire generation if the bacteria enter the world's aquifers.

Racing against time and across continents, Kate and Jake must find the cure for Bacillus nocturne, track down the rogue scientist who genetically modified the bacterium, and solve the mystery surrounding its specifically targeted victims before it contaminates the world's water supply.