The CW has released the official synopsis of Reign episode “Leaps of Faith” (4.03) that will be aired next Friday.

Mary makes a decision that could change the course of History. Gideon (Ben Geurens) shows Mary (Adelaide Kane) what life could be like if she chose love over country. Catherine (Megan Follows) fights to cover King Charles’ (Spencer MacPherson) increasingly erratic behavior, while Claude (Rose Williams) finds an enemy in her sister Leeza (guest star Anastasia Phillips).