The Ninth Tide is a psychological thriller that blends science, mystery, and cosmic horror.

For more than thirty years, Malcolm Fraser has lived as the keeper of a remote lighthouse on the Scottish coast. Every nine years, the same impossible pattern returns: the wind dies, the sea becomes perfectly still, birds vanish, and people disappear without a trace. No one believes his warnings.

When oceanographer Isla Morgan arrives to investigate the disappearance of her father in 1989, she discovers that Malcolm’s journals reveal a disturbing pattern stretching back decades. As communication fails, the coastline is sealed off, and more people vanish, they begin to realize that the source of the phenomenon lies deep beneath the ocean.

What begins as a scientific investigation slowly becomes a desperate struggle against something far older than human civilization. The truth proves more terrifying than either of them could ever have imagined.

The Ninth Tide is an atmospheric novel about isolation, guilt, sacrifice, and the price of forbidden knowledge. Perfect for readers who enjoy psychological suspense, slow-burning horror, and cosmic mystery