After the week-long break, "Reign" will return with Season 3 Episode 7 on Friday, 4 December. In the upcoming "The Hound and the Hare" we will see the new widow Mary (Adelaide Kane) being forced into marriage again.

Catherine (Megan Follows) believes that Spain would prove to be a very powerful ally for France and urges Mary to marry Prince Don Carlos (Mark Ghanimé). However, the widowed Queen uncovers a dark secret that he is hiding.

Meanwhile, Gideon Blackburn (Ben Geurens), Elizabeth's (Rachel Skarsten) spy, has arrived at the French court. We know that he has been tasked by the Queen of England to seduce Mary and sabotage her marriage prospects. His sudden arrival has obviously roused the suspicion of the French court.

Meanwhile, Bash (Torrance Coombs) tracks the mysterious killer to Greer's tavern and is heard saying in the promo: "Killing is this man's compulsion... His passion.. She is the killer's next target."

Although "she" is not explicitly mentioned, it is obvious that the target is most possibly Mary, considering she is seen panicking and running in the woods and walking around in an abandoned room before being stopped in her tracks by a man, whose face isn't exposed to the camera.

Here is the official synopsis for Season 3 Episode 7 of "Reign"

Prince Don Carlos (of Spain visits France, Mary (Adelaide Kane) uncovers a dark secret he is hiding and enlists in Catherine to advise her on how to handle. When Gideon, the new ambassador from the English court arrives, suspicions arise about what his true intentions are, while Bash's pursuit of the mysterious killer comes to a head at Greer's tavern.

Watch out for Season 3 Episode 7 of "Reign" at 8.00 PM(EST) on Friday, 4 December. You can also live stream "The Hound and the Hare" via CWTV. 

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