In our brand new interview, Robert James-Collier explains the motives behind the extreme measures Thomas has taken to rid himself of his sexuality.
This week's episode may have packed a punch, but how much do you remember?
Take the Downton episode five quiz.
Decisions must be made and loyalties are tested, get a taster of what's to come in our picture preview.
Could there be trouble ahead as Simon Bricker's interest in Lady Crawley intensifies?
Watch our exclusive interview with Hugh Bonneville, Elizabeth McGovern and Richard E. Grant, as they reveal why Downton Abbey's cornerstone couple may be heading for troubled waters.
Take our poll and tell us if you think Cora is being taken for granted.