VIDEO: Sneak Peek - This Week's New Episode of The CW's REIGN

On this week's new episode of REIGN, titled "No Exit" and airing Thursday, April 17, when Mary's brother James (guest star Joe Doyle) arrives in France and convinces Mary to return to Scotland, Francis (Toby Regbo) is suspicious and uncovers a plot that would destroy Mary (Adelaide Kane), which causes a rift between them. King Henry's (Alan Van Sprang) downward spiral continues, leaving Penelope (guest star Kathryn Prescott) in charge, causing Catherine (Megan Follows) and Kenna (Caitlin Stasey) to take drastic measures. Meanwhile, Lola (Anna Popplewell) becomes wary of Lord Julien's (guest star Giacomo Gianniotti) motives behind his marriage proposal. Torrance Coombs and Celina Sinden also star. The episode was directed by Mike Rohl and written by Hannah Schneider (#118).

Check out a sneak peek below!