Reign - Season 4 May 2026

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

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

: Mary remains fueled by a desire for revenge after Elizabeth ordered the execution of her lady-in-waiting, Lola. 💍 New Alliances and Betrayals : For the first time, the two queens

: Mary looks to secure the English throne by marrying Lord Darnley, a nobleman with his own blood-claim to Elizabeth's crown. 💍 New Alliances and Betrayals : Mary looks

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. 👑 The Final Conflict: Two Queens

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