'Downton Abbey': Episode 5 in pictures
But what's going on? Well, someone shows up like a bad penny and old secrets are dug up (but can they be buried again)? If you want more hints about what could happen, you can check out our ten teasers. Otherwise, click through our gallery below to see what's coming up (but be warned, minor spoilers lie within!).
Downton Abbey airs on Sunday at 9pm on ITV1.