Oscar's second wife Maya arrives in London. Hannah and Nathan fight to save their marriage. Goldie finally has her day in court. Ruth gets help comes from an unexpected source. Hannah finally confronts the past.
Nathan swears to Hannah that he did not meet anyone on the Indiana Ray site. Rex and Nina start to fall for one another.
The Foreign Secretary's husband has been caught in an online hack of an illicit dating website. Rose confesses to James she doesn't want children. A family dinner proves disastrous when Nina gets drunk.
Hannah finds herself caught in the middle when Nathan and Christie clash on a highly charged divorce case involving fertility law and the ownership of frozen embryos. Ruth continues to evade questions regarding Oscar's return and the concern over Defoe's finances.
Things become increasingly complicated for Hannah as she faces Christie's ex-wife in a tricky prenup, and the three sisters meet their father for the first time.
A leading divorce lawyer finds business is personal when she leaves the family firm for a rival and finally faces her estranged father, who walked out 30 years ago.