Burned CIA agent Jessica Kane reactivates as 'Codename Rome' to destroy Cardinal Ricci's Ratline, Vatican-GRU plot selling NATO codes for Adriatic sub blackouts. From Trastevere drops to Vatican Necropolis, she scales cipher-rig power, assembles Italian strike team, Carabinieri, Camorra wolves, rogue priests, canal rats. Surgical firefights, garrotes, EMPs torch 5 sub pens & moles. Ends basilica cataclysm.