Sara Garcia

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.

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.

Queen Mary (Adelaide Kane) discovers there is a leak amongst her advisors and sets out to uncover the traitor. Queen Elizabeth (Rachel Skarsten) enlists in Narcisse (Craig Parker) to further her quest for supremacy. Meanwhile, Catherine (Megan Follows) takes desperate measures to regain some of the power she has lost. Spencer MacPherson, Will Kemp, Dan Jeannotte, Jonathan Goad, Ben Geurens, Celina Sinden and Rose Williams also star.

Gideon (Ben Geurens) shows Mary (Adelaide Kane) what life could be like if she chose love over country. Catherine (Megan Follows) fights to cover King Charles' (Spencer MacPherson) increasingly erratic behavior, while Claude (Rose Williams) finds an unlikely enemy in her sister Leeza (guest star Anastasia Phillips). Rachel Skarsten, Dan Jeannotte, Will Kemp, Jonathan Goad, Celina Sinden and Craig Parker star.

Mary (Adelaide Kane) must deal with the political repercussions of a potential marriage to Lord Darnley (Will Kemp) and King Charles (Spencer MacPherson) disappears, leaving Catherine (Megan Follows) to pick up the pieces. Elizabeth (Rachel Skarsten) comes to Gideon's (Ben Geurens) aid, while Claude (Rose Williams) receives an interesting proposition. Craig Parker, Dan Jeannotte, Jonathan Goad and Celina Sinden star.