obsidian gambit

He is Thames Barn — gentleman, ghost, and the last man you want on your trail. And this time, he is not working alone.A secret summons at his London club pulls Barn into the most ambitious theft in criminal history: the Obsidian Exchange, a shadow finance syndicate chaired by the cultured and ruthless Dorian Kaine, is assembling the Sovereign Key — five fragments scattered across the globe that, u...