Reign 1×22 “Slaughter of Innocence” (Season Finale) – When the King’s (Alan Van Sprang) madness and cruelty reaches a fevered pitch, Mary (Adelaide Kane) and Francis (Toby Regbo) take action. Their choices could change the course of history, but an unforeseen terror brewing in the woods could cost them, and their friends, everything. Mary makes a drastic decision when she learns Lola (Anna Popplewell) is going through a life-threatening labor at a location outside of the castle. Megan Follows, Torrance Coombs, Caitlin Stasey and Celina Sinden also star. David Frazee directed the episode written by Laurie McCarthy and Doris Egan (#122).