Here is the extended promo for Reign Season 4 Episode 14, "A Bride. A Box. A Body" - airing next Friday on The CW.
Inside the episode: Mary (Adelaide Kane) pursues her quest for justice as she launches a counter attack on her conspirators.
Looking for more spoilers?
Head over to Reign Episode Guide: “A Bride. A Box. A Body” for the full description of this episode.