4x16 All It Cost Her
First Aired: Jun. 16, 2017 on The CW
Summary: Mary makes a decision that will change the course of history -- forever shaping the fate of her nation, her crown, and her newborn son. Mary's perilous move for her survival causes the stunning realization that perhaps she is not the only one who may not survive. Meanwhile, Elizabeth…
- SPOILER: Adelaide Kane is the same age, 26, as Jake Foy, who plays her son James as an adult in the final episode.
- The final episode of Reign.