Take a deep breath, chaps, because this one’s gonna hurt.
In the episode, the Crawley family travels north to Duneagle Castle in Scotland. Amid a rash of new romances and a country fair, Lady Mary gives birth to her and Matthew’s first child — a boy. As a giddy Matthew drives to Downton in his motorcar to deliver the good news, he gets in an accident and dies.
Kind of a buzzkill, are we right? It will be interesting to see where Lady Mary’s love life goes from there when the sudsy Julian Fellowes drama returns for Season 4.