Plot summary
Queen Mary and Lord Darnley clash over her attempt to ally with Lord Hamilton ( Tyrone Savage ), Darnley's family enemy, but they tentatively reconcile when Mary tells him that she's pregnant. Greer and James kiss. Emily feeds James false information from John Knox, causing a misunderstanding that leads to Hamilton's death and James's willing exile from Scotland to protect Mary's reputation. Elizabeth seeks a husband and shows interest in Archduke Ferdinand of Austria ( Steve Byers ); at the same time, Gideon accepts Elizabeth's request to try to get her pregnant, testing her fertility before any potential marriage. Queen Catherine successfully pressures Narcisse into starting an affair with Nicole, so to better control her and King Charles. Charles finally accepts responsibility of being king, just when his younger brother, Henry (Nick Slater), returns to court.
Credits
Adapted from Wikipedia contributors, Reign season 4. HTML formatting and reference markers removed.