In 1722, a pirate took a secret to a sea cave in the Canary Islands — and for three hundred years, the sea kept it.
Jack Coltrane spent a career learning how people hide things: first as a Marine, then through thirty years in cybersecurity. When a discovery on Florida's Treasure Coast puts a three-hundred-year-old thread in his hands, he starts pulling — and finds that a man who knows how secrets are kept is exactly the man to uncover one.
"He wasn't looking for adventure. But some trails, once you find them, won't let you walk away."
The hunt crosses an ocean, cuts through centuries of history, and ends where it began — in the dark, below the tide line, where the legacy has been waiting.