Cicero is finally undone by his duplicity in the form of Titus Pullo, acting upon Octavian's request to assassinate all supporters of Brutus in Rome. Pullo and Vorenus enjoy a happy if counterfeit outing with their families in the countryside to hide their assassin mission. Vorena the Elder's dangerous dalliance with one of Mimeo's men continues, and the torrid affair between Octavia and Agrippa escalates. Atia's casual cruelty to ask for the assassination of people she doesn't like results in complete disaster for Octavia's friend Jocasta. Elsewhere, the headstrong Levi engages Timon in a plan to assassinate King Herod by recruiting in the synagogue where they worship. Disastrously out manned, Brutus and Cassius engage the combined legions of Mark Antony and Octavian, and confront their fates in the ferocious battle at Philippi.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
The episode begins with Brutus and Cassius on their march through Greece with their army of 100,000 soldiers to challenge Octavian. Cassius is worried about the grain supply for their army, whereas Brutus is cheerful and talking about saving the Republic. In Cisalpine Gaul, Marc Antony, Lepidus, and Octavian are devising a plan to surprise Brutus and Cassius. They believe their enemies do not know that they are reunited and hope to overcome Brutus and Cassius with an unexpectedly large army. Octavian comes up with a list of supporters of Brutus in Rome and proposes to send the list to Lucius Vorenus and order him to have them killed. Pullo is assigned to kill Cicero. Lepidus objects to the killing of some of the most honorable men in Rome but is persuaded by the prospect of the money the killing would bring to them. They resolve to march to Greece and leave Lepidus in Rome.