Sea Castle
When a young woman washes ashore on a Fort Lauderdale beach, Sloan McPherson of the Underwater Investigation Unit is called in to consult. Sloan’s instinct says murder, but even then, there are too many questions.
For answers she reaches out to Gwen Wylder. The Miami homicide detective is notorious for being manipulative, bitter, a tyrant to her peers, and wicked smart. And she demands something in return from Sloan: fresh insight into seemingly unrelated cold-case murders and disappearances—and a possible serial killer trolling the Florida coast.
As loose ends of the old files begin to come together, another woman disappears. Sloan and Gwen are certain she’s the newest link in a deadly chain. They are determined to track her down before she dies, but they soon find themselves in uncharted waters. And the deeper Sloan and Gwen go, the stranger the case gets.
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Andrew Mayne
Andrew Mayne is not just a bestselling author—he’s a magician whose illusions have dazzled audiences across the globe and a pioneer in artificial intelligence. With a background that seamlessly blends magic, technology, and storytelling, Mayne brings a unique energy and perspective to the world of thrillers and suspense.
Born with a fascination for the extraordinary, Andrew started his career as a magician, creating mind-bending illusions that left audiences questioning reality. His innovative style, dubbed “Shock Magic,” combines street-level trickery with grand illusions, earning him spots performing for prestigious names like David Copperfield and even astronauts aboard the International Space Station. But his creative vision didn’t stop there.
Underwater Investigation Unit
The Underwater Investigation Unit series immerses readers into a world where danger lurks beneath the surface of the ocean, and no mystery is too deep to uncover. With its perfect blend of pulse-pounding suspense, meticulous police work, and the eerie allure of underwater exploration, this series presents a unique twist on the traditional thriller. Here, crime doesn’t just happen on land—it thrives beneath the waves.
Underwater Investigation Unit consists of five books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

