When Simon, an English envoy, tells Mary that the English are aware of her fragile engagement to Francis, Mary and Francis put on a show to protect their alliance.

When England’s armies threaten Scotland’s borders, Mary asks King Henry for help, but he refuses. Tomas, the son of the King of Portugal, proposes marriage to Mary, promising her aid against England if she’ll abandon Francis.

Mary has to decide if she is willing to lie and sentence a man to death in order to have King Henry let her out of her engagement to Prince Francis.

When Olivia, who is an ex-lover of Francis', arrives at the castle, she brings the dangers of the woods with her.

An attempt to scare Mary causes Queen Catherine to take drastic measures to make sure the guilty party is caught. Francis, aware of Bash and Mary's growing attraction, turns to Olivia.

Mary and Francis are forced to rely on one another when the castle is taken hostage, and Catherine shocks everyone when she makes a surprising proposal to try to save their lives.

Nostradamus tells Mary of his prophecy that one among them will die soon, which causes Mary to make a decision that will forever change her relationship with Francis.

When Mary and Bash are captured and forced to return to the castle, they discover Catherine waiting and even more determined to keep Mary and Francis apart.

When a plot to kill Bash goes wrong, Queen Catherine is suspected of orchestrating it. Mary offers to help free a wrongly imprisoned pregnant peasant named Isobel who has a mysterious tie to Bash.

When King Henry accuses Queen Catherine of treason and adultery, she sets out to save her life by exposing Bash's dark past.

When Clarissa kidnaps the younger children of King Henry and Queen Catherine, Mary and Bash work with the Queen to find them, with tragic results.

With a forced marriage looming, Mary must consider both her heart and her nation when deciding whom she will wed – Francis or Bash – when Francis returns to court with Lola at his side.

Mary returns from her honeymoon and, suspicious of Lola’s strange behavior, uncovers a deception that changes everything. Bash encounters a confused and terrified Olivia, which causes him to enlist Nostradamus for help.

The castle is abuzz with First Light, where the women of the castle mingle with potential suitors. Much to Mary’s dismay, Lola is reluctant to participate in the tradition.

When Francis reluctantly agrees to help Bash uncover the threat in the woods, he ends in grave danger. Meanwhile, the King’s madness causes chaos when a servant wins “Queen for the Day,” and the King becomes obsessed with her.

When Mary learns of a secret clause in her marriage contract that her mother and Queen Catherine orchestrated, Mary and Francis plan to turn Scotland against her mother – and Mary gets her first taste of power as the Queen of Scots.

When Mary’s brother James arrives in France and convinces Mary to return to Scotland, Francis is suspicious and uncovers a plot that would destroy Mary, which causes a rift between them.

When Mary’s uncle, the Duke of Guise, arrives in France with devastating news about her mother, Mary and Francis realize they are torn between putting their own countries first or saving their marriage.

Mary enlists a mercenary to help her, which forces her to realize there are sacrifices and lives she is willing to risk to save her country. Francis embraces his role as Dauphin to lead France in a brutal battle against England.

Mary and Catherine form an unlikely alliance when deciding how to deal with the increasingly manic King Henry, which puts Francis in jeopardy. Bash finds a boy who lived to tell about his encounter with the Darkness.

When the King's madness and cruelty reaches a fevered pitch, Mary and Francis take action. Their choices could change the course of history, but an unforeseen terror brewing in the woods could cost them, and their friends, everything.