In need of escape from provincial life, Crissy Fitzgerald and her friend Jenny go on a sea cruise. Embarking at Athens they join the SEA NYMPH on her maiden voyage with their fellow passengers: a paid escort; a romantic novelist whose success hides a vengeful soul; and the ship's doctor, Luca Santo. But when Crissy meets Mark Vilos, son of a shipping magnate, her life changes course in a perilous way. Stalked by an unseen enemy and torn between her desire for two men, Crissy finds herself navigating a journey into heartbreak, betrayal, and murder. But everyone aboard is at risk from a greater threat to come - and sailing headlong into a dead calm, as inviting as it is inescapably dangerous.