Nick Lee

When King Antoine (guest star Ben Aldridge) unexpectedly returns to Court, Mary (Adelaide Kane) must help Francis (Toby Regbo) hide his weakening condition long enough to secure his family's future. With the Throne in jeopardy and time running out, they must turn to an unlikely ally in need of redemption. Megan Fellows, Anna Popplewell, Craig Parker, Torrance Coombs, Celina Sinden, Jonathan Keltz and Rose Williams star.

Mary (Adelaide Kane) realizes she must help Catherine (Megan Follows) in her quest to become regent, even at the risk of hurting the alliance with Scotland. Claude (Rose Williams) is determined to help Leith (Jonathan Keltz) marry while Elizabeth (Rachel Skarsten) struggles with the prospect of losing Dudley (Charlie Carrick). Toby Regbo, Torrance Coombs, Craig Parker, Anna Popplewell, Celina Sinden and Ben Geurens also star.

Victoria starts planning a scheme that includes Emily; Emily locks in on a new target; Declan learns something that may threaten the Stowaway's future.

After Mary (Adelaide Kane) receives an urgent message from her ailing mother (guest star Amy Brenneman) about the dire situation in Scotland, she finds herself looking to Francis (Toby Regbo) for aid. Catherine (Megan Follows) finds herself up against Narcisse (Craig Parker) as she fights to become the regent to Charles (guest star Spencer MacPherson). Meanwhile, Elizabeth (Rachel Skarsten) faces continued pressure to wed. Anna Popplewell, Torrance Coombs, Celina Sinden, Charlie Carrick, Jonathan Keltz and Rose Williams star.

Elizabeth (Rachel Skarsten) must deal with the political backlash of harboring Catherine (Megan Follows) in England, while Catherine is imprisoned upon her return to France. Mary (Adelaide Kane) is forced to make some difficult decisions about securing Scotland's future and Lola (Anna Popplewell) is conflicted in her feelings for Narcisse (Craig Parker). Toby Regbo, Torrance Coombs, Celina Sinden, Jonathan Keltz and Rose Williams star.