Winifred’s spendthrift husband Monty continues to rack up debts, while Soames has bigger marital problems. Attempting to improve his disastrous marriage, Soames engages Bosinney to build a mansion for Irene at Robin Hill, a country estate far removed from London. June suspects what Soames does not, that a powerful attraction exists between Irene and Bosinney. The attraction ignites a sexual liaison. Meanwhile, Old Jo surprises his son and Helene at their modest home, and attempts to mend the rift in the family. Young Jo astounds his relatives by attending the funeral of the eldest Forsyte, Aunt Ann.