In the fourth-season opener, Mary tests her brother after he meets with John Knox, because she’s unsure about whom she can trust. Meanwhile, Elizabeth schemes to sabotage Lord Darnley’s relationship with Mary.
Season 04, Episode 02 – “A Grain of Deception”
Mary learns there’s a traitor within her inner circle of advisers, and she’s determined to unmask the guilty party. Meanwhile, Elizabeth seeks Narcisse’s help as she tries to expand her power; and Catherine is desperate to reclaim some of her lost power.
Season 04, Episode 03 – “Leaps of Faith”
Charles behaves erratically, but Catherine covers for him as best she can. Meanwhile, Gideon wants Mary to see what life could be like if she prioritizes love over country; and Claude and her sister Leeza become unexpected adversaries.