The Ninth Lighthouse

Nathan Cole came to Crale Island to keep a light burning. A former Coast Guard technician, injured and restless, he takes a quiet posting on a remote lighthouse off the New England coast. The job is simple: maintain the equipment, log the weather, stay out of trouble. But the island has a history. Eight previous keepers. All dead. All ruled accidents. At first, the anomalies are small. A service panel that's been opened too often.
Lights offshore that don't follow any known signal pattern. The feeling - impossible to prove - that someone else is moving through the lighthouse at night. Then Nathan finds the hidden infrastructure. Buried within the tower walls and coastal caves is a covert signal network - one that has guided illegal vessels along the coast for nearly two decades. A system protected by corruption, enforced by violence, and maintained by people who make problems disappear.
Nathan is the ninth keeper. And he's the first to understand what's really happening. With the help of a marine biologist who's been unknowingly tracking the operation for years, Nathan begins to uncover the full scale of the network. But as he gets closer to the truth, the island closes in. Someone is watching him. Someone knows what he's found. And if history holds, he won't be leaving Crale Island alive.
The Ninth Lighthouse is a gripping, atmospheric thriller about isolation, corruption, and the cost of refusing to look away - perfect for readers who love intelligent suspense with a slow-burn edge and explosive payoff.