Downton Abbey

Break out the fainting couch. The first trailer for Downton Abbey's fifth season is here! And unlike the brief teaser previously released, this video dives deep into the changing environment at Downton.

"I feel a shaking on the ground I stand on," Carson narrates.

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But what's Mrs. Hughes secret? Who's caught in a fire? And why would anybody want to sleep with that sleazeball Jimmy?

Downton returns to PBS on Jan. 4.