The salt marsh
Sam Coyle's father lived in the shadows - an undercover agent among the spies and radicals of Cold War London. That world claimed his life, and Sam is haunted by his absence. He left nothing behind but his enemies; nothing to his daughter but his tradecraft and paranoia. Now, her boyfriend Luke is missing too - the one person she could trust, vanished into the fog on the Kentish coast. To find him, Sam must follow uncertain leads into a labyrinth...