With an increasingly unstable Vorenus running the Aventine quarter for Mark Antony, Pullo must fight to rein in his old friend's aggressive stance; Octavian wins a powerful ally in his fight to destroy Mark Antony.

Jonas and Carrie decide to revisit Carrie's past, but it puts their relationship under strain. Meanwhile, Quinn is busy stalking his prey.

In shocking and unexpected circumstances, Carrie finds that the answers she needs are eluding her. Meanwhile, Saul and Allison run an operation.

Anxious about her situation, Allison meets with Ivan; Carrie scours the leaked documents without success; Saul is seized by Israeli intelligence as he heads to the airport.

Allison suggests that Israel was behind the downing of Youssef's plane. Carrie calls Jonas for assistance with Quinn and Carrie determines that Russian foreign intelligence is after her. Quinn slips away from the safe house.

Carrie tries to convince Saul of the connection between Allison and Ahmed Nazari. Saul plants a bug in Allison's phone and Allison heads to a safe house to meet with Ivan after learning that a Russian agents is planning to defect.

Carrie realises that she urgently needs Allison's help. Meanwhile, Quinn's plans undergo a significant change.

Quinn begins to investigate the mysterious watchers across the street while Carrie tries to manage her role with the incoming president and Saul seeks out an old acquaintance.

Paul's chance to hear the baby's heartbeat at Jamie's ultrasound appointment is delayed when he and Ira lose Paul's father.