'Reign' promo: Can Mary and Francis pretend to be in love to save their countries?

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The shaky alliance of Prince Francis and Mary, Queen of Scots, will be put to the test in Thursday (Oct. 24) night's all-new episode of "Reign."

Though Francis made his stance on his betrothal to Mary quite clear in the series premiere, he will have to put on a show of love when the English learn of the not-quite-permanent alliance France has with Scotland. Will pretending to be happily engaged force Francis to confront his real feelings for Mary, or will the scheme endanger Mary's life even more?

Read the full synopsis of the episode below:

When Simon (guest star Luke Roberts), an English envoy, tells Mary that the English are aware of her fragile engagement to Francis, Mary and Francis put on a show to protect their alliance. Meanwhile, when Queen Catherine learns that someone who knows about her plot to destroy Mary is still alive, she stops at nothing to make sure they are silenced for good.

Watch the promo for episode 2, "Snakes in the Garden," below:

"Reign" airs Thursdays at 9 p.m. ET on The CW.

Photo/Video credit: The CW