Mary & Francis Let The Past Be The Past In An All-New 'Reign'

Queen Mary (Adelaide Kane) and King Francis (Toby Regbo) share a dance in the ballroom in this new still from Reign.

In “Sins of the Past”, As the castle prepares for the Winter’s Ease Feast, King Antoine (Ben Aldridge) of Navarre reveals to Francis and Mary England’s plan for revenge against France. Bash (Torrance Coombs) learns that an “undead” man has been seen in the village and his efforts to track the man down lead him to a mysterious woman in white.

Meanwhile, Catherine (Megan Follows) finds out the cause of her hallucinations.

“Sins of the Past” airs TONIGHT, Thursday, February 5th @ 9PM ET/PT on The CW.