Audiobook Emperor's Lion, written by Alex Gough. A single death could plunge the Empire into chaos. Silus, a member of Emperor Caracalla's elite assassins, the Arcani, is dispatched to Numidia. Rumours of assassination plots against Marcellus, the Emperor's closest aide, are rife. Silus must stop them. But the forces arrayed against the Arcani are now as powerful as they are clandestine.