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.
Do you trust Thomas? After years of scheming and manipulation it's no wonder his fellow servants don't but is Thomas really ready to turn over a new leaf?
See what the cast, including Robert James-Collier who plays Thomas, think.
How much do you remember about Thomas's wicked ways? Take our Thomas quiz and find out.
Bad boy turned hero Thomas Barrow can be nice when he wants to - he just doesn't seem to want to very often and never manages to contain his bad self for long..
Take our quiz and see if you can remember how Thomas reacted in these 10 scenarios from past series.
Lady Mary braves the race track in Sunday's show to watch new beau Henry Talbot do what he does best - are things moving too fast? Lady Edith's new chap Bertie is back and Tom gets a taste of the track.
Below stairs could Thomas's fortunes be changing?
Tune into ITV on Sunday from 9pm to to see more.
It was open house at Downton Abbey on Sunday, Lady Mary and Henry Talbot sealed it with a kiss and there was more trouble for Thomas.
See if you can remember the finest details of episode 6 by acing our tricksy little quiz.
At the end of last Sunday's show Lord Grantham's life was hanging in the balance after an explosive illness at the dinner table.
Take a peek at episode six to see how his Lordship is shaping up and what new dramas the family have to contend with.
Make sure you're watching at 9pm on Sunday, ITV.