Queen Mary discovers there is a leak amongst her advisors and sets out to uncover the traitor. Queen Elizabeth enlists Narcisse to further her quest for supremacy. Meanwhile, Catherine takes desperate measures to regain some of the power she has lost.

The episode was rated 7.81 from 901 votes.

After a tragic earthquake hits Scotland, Mary must face John Knox amidst claims that she isn't coming to the aid of her people. Elizabeth takes drastic measures after she is discovered with Gideon, while Charles makes a decision that backfires.

The episode was rated 7.82 from 743 votes.

When Darnley gets a surprise visitor, his marriage to Mary hangs in the balance. Elizabeth learns her attempt to stop Mary backfired. Meanwhile, Catherine and Narcisse find King Charles and must convince him to return to the castle.

The episode was rated 7.85 from 825 votes.

Gideon shows Mary what life could be like if she chose love over country. Catherine fights to cover King Charles' increasingly erratic behavior, while Claude finds an enemy in her sister Leeza.

The episode was rated 7.85 from 878 votes.

Mary must deal with the political repercussions of a potential marriage to Lord Darnley and King Charles disappears, leaving Catherine to pick up the pieces. Elizabeth comes to Gideon's aid, while Claude receives an interesting proposition.

The episode was rated 7.85 from 834 votes.

Mary contemplates how to take over the English throne; Elizabeth struggles to find an appropriate suitor to marry; James gets caught up in a scheme orchestrated by John Knox

The episode was rated 7.88 from 781 votes.

Queen Mary, unsure who to trust, tests her brother James to ensure his loyalty after hearing of his meeting with John Knox. Queen Elizabeth agrees to help Lord Darnley, in an attempt to sabotage the powerful suitor’s relationship with Mary.

The episode was rated 7.89 from 971 votes.

When Lord Darnley surprises Mary with a visit in Scotland, Mary sees a glimmer of a union that could be more than just political. Elizabeth fights to gain allies in her favor and Catherine must work to get Claude back on track by finding her a new husband.

The episode was rated 7.91 from 867 votes.

Darnley teams up with John Knox to strip Mary of her throne, which will leave a close friend of Mary's dead. Elizabeth must banish Gideon from court at the request of her future husband, while Charles takes a bold stance against his brother Henri.

The episode was rated 7.92 from 746 votes.

As Mary’s upcoming wedding looms, a terrible tragedy pushes Mary and Darnley apart, forcing Mary to enlist in Catherine’s help. Elizabeth encounters a traitor to Spain, who petitions her to support an expedition to the New World.

The episode was rated 7.94 from 835 votes.

Mary pursues justice by launching a counterattack on her conspirators. Meanwhile, Elizabeth suffers a major setback, and it turns her world upside down.

The episode was rated 7.98 from 713 votes.

Mary and Darnley are at odds as their plan to seize England is put into action; Elizabeth is conflicted about her feelings for Gideon; Catherine's son Henri tries to claim the throne from Charles.

The episode was rated 7.99 from 776 votes.

Mary’s life hangs in the balance — Childbirth threatens to take Mary’s life, which leaves her and her unborn child’s safety in jeopardy. Elizabeth discovers that someone in her inner circle was the cause of the death of someone close to her.

The episode was rated 8.01 from 705 votes.

Mary and Darnley wed in a lavish affair, which proves to be a successful decision in regards to her political standing. James makes an interesting discovery about Greer, while Elizabeth frantically tries to salvage England’s power.

The episode was rated 8.03 from 833 votes.

Mary makes a decision that will change the course of history -- forever shaping the fate of her nation, her crown, and her newborn son. Mary's perilous move for her survival causes the stunning realization that perhaps she is not the only one who may not survive. Meanwhile, Elizabeth steadies herself for war and will become the instigator in Mary's demise while later realizing she and Mary might be more similar than either thought. (Series Finale)

The episode was rated 8.14 from 698 votes.