Masterpiece Classic: Downton Abbey, Series III, Part 4

Sunday, January 27 at 9:00 p.m.

Wrenching social changes, romantic intrigues and personal crises continue to grip the residents of the majestic English country estate, upstairs and down.

In part four, the Crawley family faces its severest test yet. Meanwhile, new faces try to fit into the tight-knit circle of servants and new evidence turns up in a baffling case.

Pictured: Hugh Bonneville as Robert, Earl of Grantham, and Jim Carter as Mr. Carson.