Reign - Season 3 Episode 08

As Mary (Adelaide Kane) and Catherine (Megan Follows) deal with the aftermath of Prince Don Carlos' (guest star Mark Ghanime) accident, Mary realizes that she will have to marry for the good of her country and not follow her heart. When Catherine is accused of poisoning Francis (Toby Regbo), Lola (Anna Popplewell) is shocked when Mary thinks Narcisse (Craig Parker) framed Catherine in order to become Regent of France.