Clavius, a powerful Roman military tribune, and his aide, Lucius, are tasked with solving the mystery of what happened to Jesus in the weeks following the crucifixion, in order to disprove the rumors of a risen Messiah and prevent an uprising in Jerusalem.
During a handover to the head of counter-terrorism of MI5, Harry Pearce, a terrorist escapes custody. When Harry disappears soon after, his protégé is tasked with finding out what happened as an impending attack on London looms, and eventually uncovers a deadly conspiracy.
