Emperor's Knife (Imperial Assassin): 2 (The Imperial Assassin)

Brothers. Emperors. Deadly enemies... An unputdownable novel of intrigue and combat in Rome.
Emperor Severus is on his deathbed. His sons Geta and Caracalla, feuding in Britannia, are readying for a devastating power struggle.
Silus, now a centurion in the Arcani, the secretive network of spies and killers, is thrown into the maelstrom. Back in Rome, plots breed in the stinking alleys.
Everyone might be an enemy. Everyone a traitor. As an Imperial Assassin, Silus' loyalty will be tested to breaking point. And with the Empire starting to buckle under the strain, Silus must ask what matters: Rome or his own damned soul?
Better watch yourself...
From thundering races at the Circus Maximus to death in the Imperial palaces, this is a powerful and unputdownable novel that will transport to you Ancient Rome, perfect for fans of Ben Kane, Simon Scarrow and Conn Iggulden.