S3, E13: Mary (Adelaide Kane), in order to protect Elizabeth (Rachel Skarsten), unknowingly puts Gideon's (Ben Geurens) life in danger. To save him, Mary turns to another Englishman for help - Robert Dudley (Charlie Carrick). Meanwhile, Bash (Torrance Coombs) is determined to track down the men behind the threats to Catherine (Megan Follows). Anna Popplewell, Craig Parker, Rose Williams, Celina Sinden and Jonathan Keltz also star.