Reign - Season 3, Episode 8 - Rotten Tomatoes

Our Undoing


Episode Info

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.


Toby Regbo
as Francis
Torrance Coombs
as Sebastian "Bash"
Megan Follows
as Catherine
Craig Parker
as Narcisse
Mark Ghanimé
as Prince Don Carlos
Ben Geurens
as Gideon Blackburn
Rachel Skarsten
as Elizabeth
Charlie Carrick
as Robert Dudley
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Our Undoing Photos

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