Downton Abbey on Masterpiece

This British drama series follows the lives of the Crawley family and its servants in the family's classic Georgian country house. The series begins with the 1912 sinking of the Titanic, which leaves Downton Abbey's future in jeopardy, since the presumptive heirs of Robert, Earl of Grantham -- his cousin James, and James' son, Patrick -- die in the catastrophe, leaving the family without a male offspring to take over Downton when the current lord dies. The point is important since Lord Grantham's children are daughters -- Ladies Mary, Edith and Sybil, but the facets of their lives and of those of the below-stairs staff -- also a highly regimented world -- have fascinating story lines.