"Reign" fans are going through a hard time after the death of their beloved King Francis (Toby Regbo) and the current predicament France is going through. Just three weeks into Francis' death, his widow is already being forced into getting married again.

Mary's (Adelaide Kane) fate will not be revealed to us just yet, as the show has gone on a short week-long break. We do however know that when the show returns with Season 3 Episode 7 "The Hound and the Hare" on Friday, 4 December, her life will be in danger.

Don Carlos (Mark Ghanimé), Mary's new suitor, is a mysterious Spanish royal, on whom all the episode focuses. In the promo for Season 3 Episode 7 we see Catherine (Megan Follows) urging Mary to marry again. "Wed Don Carlos," she tells her daughter-in-law adding that Spain is the greatest power in Europe in the hope that would convince her.

However, of all the bad decisions Catherine has made, this might be the worst, because he is apparently a killer. Bash (Torrance Coombs) is seen saying, "Killing is this man's compulsion... His passion." He is also seen concluding that "she" is the killer's next target. Although Mary's name is not explicitly stated, from the other events in the promo, it can be inferred that "she" is Francis' widow.

Confirming this theory, Mary is seen walking in the woods screaming "Don Carlos". The exact details of Mary's future will be revealed on 4 December and until then do not forget to check back here for more updates and spoilers.