In a Grey Cap ruled Ambergris, terror is a way of life, but for John Finch, investigating a mysterious double murder, things are about to reach an unimaginable pitch of awfulness. Plagued by his Grey Cap superiors, spies, gangsters and rebels and with his own past coming back to haunt him and a terrible future in prospect, Finch tries to solve the case even though the answers go beyond reason. Dark noir, surreal fantasy and otherworldly horror combine in an intense and original thriller that seems to close out the Ambergris cycle of stories with an epic finale.