Reign - Season 4 Here

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

: A "warm-hearted bad boy" and loyalist who eventually wins Mary's heart, though their connection leads to further political controversy. Reign - Season 4

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

: 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. Reign - Season 4