After a passionate courtship, Lord Frederick Trenchard marries the young and striking Clara Dunn. However, the intrigue and scandals of Belgravia and secrets from Frederick's past threaten the couple's new-found happiness.

Following their argument, Frederick attempts to renew their relationship by taking Clara to Glanville, their country estate, and reveals some of the trials of his childhood; the Dunns take in the mysterious Nell as their new maid.

The Trenchards travel to Maywood for the Duke's birthday; behind the scenes, business deals are being struck, but the Rochesters have private reasons for the trip; Clara conspires to repair Frederick and James' relationship.

Reeling from James' visit, Frederick pushes forward in his work at the foundry; Clara finds comfort in a new group of friends made through Dr Ellerby; a lonely James seeks solace elsewhere.

As Clara's fascination with Stephen's world develops, she makes a bold decision that alarms Davison; James' private life finds him under threat; Frederick grows determined to become part of Marquise's new venture.

Emily confronts Clara about the painting, worried about the potential scandal for their family; Frederick moves forward with his investment in the silver mine; Ross begins to grow suspicious of the Marquise.