As a lexicographer, Abigail Harker has always taken refuge in the meaning of words. But when fate erases in one tragic moment what she loves the most, the very foundations of her life vanish. Abigail retreats to Chapel Isle, a secluded island in North Carolina’s Outer Banks. As caretaker of a run-down lighthouse, she hopes to redefine herself. But as a resident soon remarks, “If you came to Chapel Isle for normal, you came to the wrong place.” For on Chapel Isle, no one can be neatly defined. From a scientific genius to the feuding fishermen’s wives, from a handsome hothead to the ghost said to be haunting the lighthouse, everyone is struggling to find meaning where meaning seems lost. And when a series of mysterious crimes strikes the island, Abigail finds that she must face down her deepest fears if she is to save herself, her neighbors, and the new life she’s unexpectedly come to cherish.