Foulness Island

A mysterious letter with Polaroids of an ancient double-headed axe leads journalist and historian Chloe to the southeast coast of England in search of an old friend who is missing and accused of murdering her husband. With CIA-agent boyfriend George Saint, she finds herself on a walled sea-level island, off limits to visitors, and used by the government for testing new weapons. Among rumors of ghosts and an underwater Roman road, an old merchant mariner offers help when their quest uncovers an unexpected link to international lawlessness.