TV series
Love is the most dangerous subject.
Mary, Queen of Scots, faces political and sexual intrigue in the treacherous world of the French court.
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Checked Jul 22, 2026
Mary, Queen of Scots, faces political and sexual intrigue in the treacherous world of the French court.
Cast, crew and production details
Adelaide KaneMary Stuart
Toby RegboFrancis II of France
Will KempHenry Stuart, Lord Darnley
Dan JeannotteJames Stuart
Torrance CoombsSebastian
Megan FollowsCatherine de' Medici
Celina SindenGreer
Caitlin StaseyKenna
The CWUnited States
Warner Bros. TelevisionUnited States
CBS StudiosUnited StatesWatch options above are for the show and may vary by season or episode.
Episode 1
Queen Mary struggles to hold on to her power in Scotland amidst Queen Elizabeth's campaign to sabotage her with the help of a new ally in Queen Catherine. Meanwhile, with Francis' fate at odds and Elizabeth distracted by temptation in her first love, Robert Dudley, both queens struggle to rule.
Directed by Holly DaleWritten by Laurie McCarthyGuest stars Toby Regbo
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Episode 2
Elizabeth must deal with the political backlash of harboring Catherine in England, while Catherine is imprisoned upon her return to France. Mary is forced to make some difficult decisions about securing Scotland's future and Lola is conflicted in her feelings for Narcisse.
Directed by Fred GerberWritten by Lisa RandolphGuest stars Toby Regbo, Jonathan Keltz, Rose Williams
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Episode 3
When King Antoine unexpectedly returns to Court, Mary must help Francis 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.
Directed by Holly DaleWritten by Drew Lindo, Wendy RissGuest stars Toby Regbo, Jonathan Keltz, Rose Williams
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Episode 4
After Mary receives an urgent message from her ailing mother about the dire situation in Scotland, she finds herself looking to Francis for aid. Catherine finds herself up against Narcisse as she fights to become the regent to Charles. Meanwhile, Elizabeth faces continued pressure to wed.
Directed by Nathaniel GoodmanWritten by April Blair, Robert D. DotyGuest stars Toby Regbo, Rose Williams, Daniel Kash
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Episode 5
Grateful for a future with a revived Francis, Mary considers signing away her claim to the English throne, and staying in France forever. Catherine learns that Nostradamus has returned -- with a new vision involving Francis' fate.
Directed by Deborah ChowWritten by Shannon GossGuest stars Toby Regbo, T.J. McGibbon
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Episode 6
Mary realizes she must help Catherine in her quest to become regent, even at the risk of hurting the alliance with Scotland. Claude is determined to help Leith marry while Elizabeth struggles with the prospect of losing Dudley.
Directed by Charles BinaméWritten by Lisa RandolphGuest stars Jonathan Keltz, Rose Williams
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Episode 7
Mary unearths a dark secret being kept by a Spanish prince, so she seeks Catherine's counsel. Meanwhile, suspicion surrounds a new ambassador from English court; and Bash's quest to find a mysterious murderer takes him to Greer's tavern.
Directed by Anne WheelerWritten by Bo Yeon Kim, Erika LippoldtGuest stars Morgan David Jones, Jonathan Keltz
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Episode 8
Mary must marry again in order to help Scotland, whose welfare she has to prioritize over her heart. Meanwhile, Catherine is accused of poisoning Francis, but Mary believes Catherine is being framed by Narcisse, who's angling to become regent of France.
Directed by Lee RoseWritten by Gretchen J. Berg, Aaron HarbertsGuest stars Richard de Klerk, Rose Williams
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Episode 9
Claude is forced to marry someone selected by Narcisse. Meanwhile, a surprising discovery is made by Elizabeth, and it could alter her reign; and Mary asks Gideon to help her confirm her suspicions about Prince Don Carlos.
Directed by Norma BaileyWritten by Drew Lindo, Wendy RissGuest stars Paul Beer, Morgan David Jones, Jonathan Keltz, Rose Williams
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Episode 10
Mary's feelings for Gideon are hard to suppress, but she does her best as she seeks political allies. Meanwhile, Elizabeth and Greer face gut-wrenching scenarios; Claude is in danger on her wedding night; and a power struggle over the regency continues.
Directed by Megan FollowsWritten by P.K. SimondsGuest stars Morgan David Jones, Jonathan Keltz, Rose Williams, Stephen Tracey
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Episode 11
Charles' coronation nears, forcing Mary to find a suitor who will be her ally. Meanwhile, Lola discovers who's been poisoning Elizabeth; and the castle's serial killer has special plans for Catherine.
Directed by Charles BinaméWritten by April BlairGuest stars Josh Cruddas, Christopher Jacot
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Episode 12
Mary must prioritize her life over her cousin's. Meanwhile, Lola and Elizabeth unexpectedly join forces; Catherine can't escape her past; and Mary and Gideon begin to see each other in a new light.
Directed by Fred GerberWritten by Wendy RissGuest stars Derek Moran, Morgan David Jones, Rose Williams
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Episode 13
Mary, in order to protect Elizabeth, unknowingly puts Gideon’s life in danger. To save him, Mary turns to another Englishman for help – Robert Dudley. Meanwhile, Bash is determined to track down the men behind the threats to Catherine
Directed by Norma BaileyWritten by Shannon GossGuest stars Jonathan Keltz, Rose Williams, Stephen Tracey
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Episode 14
Mary realizes she must return to Scotland and raise an army to save her throne; Lola gets caught while trying to help Elizabeth find information about her mother.
Directed by Michael McGowanWritten by Lily SparksGuest stars Mary Kelly
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Episode 15
Mary learns from Lola that she has a chance to get to Scotland safely, but she must act quietly and quickly. When Catherine is framed for murder, Mary must decide if she should stay to protect her, which would jeopardize her safe passage to Scotland.
Directed by Stuart GillardWritten by Drew LindoGuest stars Alexandra Ordolis, Rose Williams, Dylan Taylor
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Episode 16
When Mary arrives in Scotland, she is stunned by the treacherous world it has become and is forced her to keep her royal identity a secret until she learns who she can trust. When Elizabeth jeopardizes her standing with an unbearable new suitor, Lola steps in to help, which causes the Queen to question Lola’s ulterior motives.
Directed by Fred GerberWritten by Gretchen J. Berg, Aaron HarbertsGuest stars Patrick Garrow, Jonathan Keltz, Rose Williams, Kyle Gatehouse, Aidan Crowe
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Episode 17
When Mary is presumed dead, Elizabeth asks for Lola's help in taking the Scottish crown for herself; James must defend Mary's throne from John Knox; Mary faces Francis's killer.
Directed by Lee RoseWritten by Drew Lindo, April BlairGuest stars Dan Jeannotte, Wade Bogert O'Brien, Jonathan Keltz, Rose Williams
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Episode 18
Mary makes a bold move to defend her reign in Scotland, which results in a battle royale with her cousin, Elizabeth. Lola is accused of a heinous crime and suffers the drastic consequences. Meanwhile, back in France, Catherine finds that Charles has returned a changed man after paying a price for his mother's relentless quest for power.
Directed by Deborah ChowWritten by Laurie McCarthyGuest stars Dan Jeannotte, Wade Bogert O'Brien, Tomaso Sanelli, Jonathan Keltz, Rose Williams, Jefferson Brown
Where to watch ReignEpisode information updated Jul 22, 2026
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