Joe's teacher provides much-needed support as his anxieties over Rebecca's pregnancy grow - but this leads to him becoming fixated on her as his source of security instead of his constantly changing family. Paul is shocked when Mark announces he has applied to join the Army, but is not sure which is more worrying - the hurt he will suffer from being rejected or the danger he will face if accepted. Maurice receives an expensive gift from a member of his hiking group, and fears how Louise will react when she finds out.