Complete story — includes the ending
Mary, Bothwell, and their allies take back Edinburgh castle, but are only able to capture Lord Ruthven, who is hanged. Darnley returns to Mary, and helps her track down the other anti-Mary nobles, but the nobles are killed in a fire before they can be arrested. Although Bothwell suspects Darnley caused the fire to save himself, Mary decides to reconcile with Darnley for the sake of peace. Lady Lennox learns that Darnley did cause fire, at the urging of "Keira". Catherine, Claude and Luc try to convince Henry to end his affair with Nicole, but are unsuccessful. Charles is supposed to choose a Spanish bride, but announces that he'll marry Nicole instead. Luc asks Charles to support the annulment of his marriage to Claude. Narcisse pursues his revenge for Lola's death — he castrates John Knox, and has Gideon poisoned to hurt Queen Elizabeth I. Gideon suddenly dies in her arms.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Reign season 4. HTML formatting and reference markers removed. · Content license