Emperor. Titus accomplishes the Siege of Jerusalem by cutting off the city with an encircling wall. Yohanan ignores Josephus's pleas for surrender and leads subterranean attacks on Roman siege towers that undermine his own walls. Titus leads a bloody assault that massacres the rebels and razes the city. Episode four: Revolution Tiberius Sempronius Gracchus first makes a mark on history winning the golden crown from General Scipio Aemilianus by being first over the wall at the victorious Battle of Carthage. Back in Rome, now the "capital of the world", he finds the growing gap between rich and poor threatening the foundations of the republic. Urged to achieve greatness through further military exploits, he sets out with reinforcements for the campaign of General Gaius Hostilius Mancinus against the rebellious Numantine tribe in Spain but is defeated and forced to negotiate a peace treaty that the Senate later refuses to ratify. His actions, while repudiated in the Senate, have made him a hero amongst the Roman people and his new father-in-law Senator Appius Claudius Pulcher supports him in a successful campaign to become their Tribune. He snubs the Senate and takes his proposed land reforms directly to the People's Assembly, where his old friend Octavius vetoes them. He brings the city to a standstill when he vetoes all other business in response and has Octavius deposed. Octavius and the Senate spread false rumours that he intends to make himself king and in the ensuing unrest he is murdered. Episode five: Constantine In Rome, the tyrannical Maxentius consults the gods Jupiter, Apollo and Mars to be told that, the enemy of Rome will be defeated, while outside the city Lactantius tries to convince Constantine to convert to Christianity. Constantine initially dismisses Lactantius but, after seeing what appears to be a sign from the Christian god on the eve of the attack, he follows Lactantius' advice to adopt a Christian symbol. The two forces clash at the Battle of the Milvian Bridge, where Maxentius is drowned in the Tiber as a bridge collapses and the victorious Constantine rides into Rome under the Christian symbol. Constantine creates an alliance by marrying his sister Constantia to the Eastern Emperor Licinius, and the two issue the Edict of Milan as a joint decree of religious tolerance. Constantine's rejection of the Pagan gods and funding of St. Peter's Church turns Licinius and the Senate against him. Senator Bassianus'