Following Bert's death and its subsequent cover-up, those involved look for inner peace. Sarah battles her own inner demons aware that Colin's suffering is tenfold.

As Sarah and George are about to host their engagement party, Sarah confides to her Aunt Peg her darkest secret. Elizabeth needs Prudence's help in her vendetta against Sarah.

Sarah leads the efforts to rescue James, but his ordeal is not over yet after his sexuality becomes known. A disturbing discovery sees Sarah having no choice but to tell George her darkest secret.

After Sarah reveals her shocking secret to George, their relationship is thrownapart. The Christmas soirée causes Jack's intimacy issues to be brought out.

Elizabeth arranges a formal party, so that she can show Sarah that she is out of her depth. Carolyn wants Jack to confront his intimacy issues.

George and Sarah are now closer than ever but they find their happiness being short-lived after they are faced with Regina’s bombshell news.

Sarah arrives in Paris to try to reconnect with her husband and is shocked by what she finds. Elizabeth pushes George to be truthful, but causes more damage to their already fragile relationship. Regina continues to circle George, putting the next stage of her plan into action. Anna finds out the truth about her real father. Olivia proves the depths she is prepared to go to save her marriage.

Sarah returns to Inverness with Rene, but may have underestimated her feelings for George. Olivia finds the burden of deception weighs heavily. Anna and Gino prepare for their wedding day. Rattled by Sarahs return, Regina takes extreme measures to get close to George.

In the final episode, Rene suspects he is standing in the way of Sarahs happiness after witnessing a moment of yearning between her and George. The bliss of Anna and Ginos honeymoon is tainted by Andrew and George has an announcement.