The last four recruits have their loyalty tested during a challenge in which they are offered a chance to sell secrets to the tabloids, betraying their organization as a result. PR consultant Max Clifford appears.
The would-be spies' manipulation skills are tested. The six remaining trainees take temporary jobs where they must cultivate co-workers into agents. Their mission: coerce them to help in a legally questionable ways.
The trainees face a 36-hour mission, in which they have to conduct a surveillance exercise on two target houses. The challenge requires them to plant secret cameras and affix tracking devices to vehicles. The would-be spies must also share cramped conditions.
Mingling skills are developed and tested. First, the trainees attempt to blend into a crowd. Then, the would-be spies have to infiltrate a building during working hours and take photographs of confidential documents without getting caught.
The recruits meet in London and face their first challenge: a real test used by Mossad, Israel's Secret Service. Then, the would-be spies are abducted in the middle of the night for an interrogation by intelligence professionals.