Lady Agnes catches the eye of charismatic American millionaire Caspar Landry but, as she and Sir Hallam look to their future, a tragic turn of events leaves their promised dreams - and a close family member - in jeopardy.
Downstairs, Mrs Thackeray makes a momentous decision, which throws the running of the house into chaos. Blanche and Mr Amanjit continue to clash, until a heart-breaking cause compels them to reconsider their differences.