At the Oval they meet Manny and demand to see Ruth. Their wish is granted but Ruth informs them that she cannot return with them, having no choice but to help the Londoners with their move to the Isle of Wight.
Manny gives Wally the task of returning to Whitecross to let them know of Greg and Charles safe arrival, promising he will lift his exile from the settlement on his return.
Greg and Charles begin to help out with the planning of the move by checking that the routes by road and rail are clear out of London and to the south. They realise that Manny is stalling operations.
This situation is confirmed when the old doctor dies leaving Ruth to cope alone, prompting Manny to put back the move plans by a couple of years!
Ruth now questions her position. Manny is unhappy when Wally returns alive and well.
Manny callously disposes of Wally on some waste ground near the settlement.
Charles overhears Manny tell Nessie that he never intends to leave London. Charles decides it is definitely time to leave and tries to persuade Ruth.
It is Nessie who finally changes her mind, insisting that she can take charge of the patients herself.
Nessie gives Ruth some drugs to help keep the London sickness at bay and urges her to leave quickly.
Penny receives instructions from Manny that Greg and Charles should be allowed to leave but not Ruth.
They leave but the fact that they pick up Ruth en route is missed. On discovering this news an enraged Manny goes after them in the Underground tunnels. Amul is now helping the trio to escape.
Manny discovers his betrayal and kills him. Greg, Charles and Ruth hurry along the railway track as Manny see them and starts shooting.
Charles fires back. Using a cart as cover they make their escape. Thinking they are safe, they are suddenly confronted by an enraged Manny.
Wally saves the day by shooting Manny. He reveals that Manny had not checked his body on the waste ground and that he had returned to take his revenge.
Wally elects to return to the settlement once he has helped them out of the tunnels. The foursome soon find their way back into the daylight.
The second episode of this story delivers a satisfying if inevitable set of events. We knew Charles and Greg would ultimately escape with Ruth and that Manny would eventually be exposed to be the cunning fascist we thought him to be. But this doesn't mean that the telling of these events is any the less interesting. The only real surprise is the pleasing resurrection of Wally to save the day, played in a nicely understated manner by a young Roger Lloyd Pack.