This is a scene from "Inquisition." It's an episode of Reign Season 1.
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With Queen Catherine looking into his past, Bash's future may be at stake on Reign. "Inquisition" is the 11th episode of the show's first season.
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Reign Season 1 Episode 11 Quotes

When the ax falls on your neck, I will be there. With Bash. The next king of France.

Mary

Off with you child. You've killed me enough for one day.

Catherine