How much do you remember about episode 7?
Lady Mary finally agreed to watch Henry race, but was it a bad idea?
Sunday's show gave us a nail-biting hour of entertainment as tragedy struck at the race-track, Edith and Bertie grew closer and the Dowager announced she would be departing.
Test your knowledge on the dramatic episode by taking the quiz.
See the cast's favourite Downton moments ever
Can Thomas really change his ways? Take a look.