Number Six has a new neighbour, Number Eight, or Nadia, an Estonian woman sent to the Village to "recuperate". Number Two (Leo McKern) seems very keen for them to socialise, arousing Number Six's suspicions. When Nadia attempts suicide following a failed escape attempt, however, Number Six comes to trust her, and eventually seems to develop romantic feelings for her.
Nadia tells Number Six that she knows the true location of the Village: it is in Lithuania, near the Polish border. Number Six constructs a small sailing boat, disguised in dismantled form as an abstract entry to the Village's art competition. He and Nadia manage to sail to a village in Poland where Nadia has contacts in an anti-communist resistance. They ship Number Six and Nadia to London in a crate.
When they arrive in the offices of the organisation that Number Six used to work for, a Colonel aggressively interrogates him, apparently suspecting that his disappearance was a defection to the USSR and that he has been sent back as a mole. The chimes of Big Ben, which Number Six and Nadia had discussed in their flirtation, sound. Unfortunately, the time is the same as that on Number Six's watch, which he took from their contact in Poland where there should be an hour's time difference.
A few minutes' search of the office reveals that Number Six is still in the Village. Number Two and Nadia watch him walk resignedly away, side-by-side. Nadia bids farewell to Number Two, in a manner which suggests that she is an even higher ranking member of whatever group they work for.
This episode provides examples of:
- Affably Evil: McKern's Number Two does like to chat up Number Six often, and treats him more of an equal than other Twos. He's still eager to break the Prisoner.
- Clock Discrepancy: Number Six realizes that his "escape" was a fake because Big Ben is indicating the same time as a watch he supposedly obtained in Poland — which should be one hour ahead of London time.
- Les Collaborateurs: The General.
- Deal with the Devil: When Two's interrogation of Nadia drives her to an attempted suicide, Six offers a deal to "settle down" (one of the two things Number Two wanted out of him) in exchange for letting Nadia out of the ward and under Six's protection. While Six is using the deal as a ruse to make an escape attempt, it's still a bad deal because Nadia is part of Number Two's overall trap.
- Driven to Suicide: Nadia tries to kill herself on the electrified floor of her cell after her failed escape attempt.
- Fake-Out Make-Out: Number Six and Nadia when discussing their escape plan, although it's not clear how fake it was.
- Fascists' Bed Time: The Village curfew at 8pm is specifically depicted.
- Hey, It's That Guy!: The Colonel who interrogates Number Six is Kevin Stoney, best known for his memorable villains in the Doctor Who stories "The Daleks' Master Plan" and "The Invasion".
- Honey Trap
- Human Mail
- Malevolent Mugshot: Apart from Number Six's work, every work in the art contest is a portrait of Number Two.
- Mood-Swinger: McKern's Number Two is memorable for his sudden swings between Affably Evil, Faux Affably Evil, and downright nasty.
- More Than Mind Control: Number Two rejects the hinted idea of torturing or brainwashing Number Six with "I want him with a whole heart, body and soul".
- No, Mister Bond, I Expect You To Dine: Played with in Number Six's mindgame with Number Two about how many sugars he takes
- Not So Different: Number Two tries to talk Number Six into believing that they are, and that so are the two sides of the Cold War. When the Colonel interrogates Number Six, Number Six seems to come close to believing this.
- Shout-Out: Number Two compares Number Six's sculpture to the work of Jacob Epstein. (In fact, Number Six's (apparent) abstract collection of found objects and wood shapes has very little to do with Epstein's modernistic but essentially representational work. This may be a mistake on the part of the writers or it may be a deliberate suggestion that Number Two is an ignorant bigot who rejects all "modern art" without knowing much about it.)
- Smart People Play Chess: Number Six playing chess with the General.
- Spotting the Thread: The time-difference inconsistency.
- Virtual Reality Interrogation
- Westminster Chimes
- Wham Episode: According to Patrick McGoohan, the fifth in internal ordering of the seven episodes that "really count".
- Worf Had the Flu: Rover is apparently held off by a few shots from a rifle. It turns out that the whole thing was staged.
- Yank the Dog's Chain: One of the several "fake escape" Prisoner episodes.