: Mary gives birth to her son, the future King James, fulfilling a prophecy of a ruler who would eventually unite Scotland and England. 🏰 Chaos at the French Court

: Mary's second husband. Their marriage is far from blissful, plagued by Darnley's violent nature and his secret alliances with Elizabeth and the Vatican.

: For the first time, the two queens actively attempt to assassinate each other.

The fourth and final season of the CW historical drama concludes the epic journey of Mary, Queen of Scots. Following the tragic death of Francis, the focus shifts to Mary's return to her homeland and the escalating rivalry with her cousin, Queen Elizabeth I of England. πŸ‘‘ The Final Conflict: Two Queens

While Mary is away, Catherine de' Medici (Megan Follows) struggles to maintain control in France. Season 4 – Reign - Rotten Tomatoes

: Mary remains fueled by a desire for revenge after Elizabeth ordered the execution of her lady-in-waiting, Lola. πŸ’ New Alliances and Betrayals

The season is defined by the high-stakes chess match between (Adelaide Kane) and Elizabeth I (Rachel Skarsten).

As Mary establishes her court in Scotland, new figures emerge with "questionable moral compasses":