When Catherine becomes suspicious that Mary and Conde are having an affair, Mary risks Catherine discovering just how deep her betrayal goes. Francis becomes gravely ill after he collapses and Bash's life is in jeopardy when he leaves to work as the King's Deputy. Meanwhile, things become complicated for Leith (Jonathan Keltz) when he is forced to be Claude's (Rose Williams) personal guard after professing his love for Greer. Craig Parker, Caitlin Stasey and Anna Popplewell also star.