Jeremy Piven, last seen on Entourage as proficiently profane talent agent Ari Gold, turns down the volume substantially to take on the title role in this PBS/Masterpiece series about the American founder of the famed London department store. PBS, 9 p.m.
When Olivia makes Georgie question her place in the family, Amy and Lou help her regain her confidence as a showjumper. This Canadian family drama follows a close-knit family struggling to run a horse ranch in cattle country. CBC, 7 p.m.
Game of Thrones
As the epic series' third season begins, the Lannisters hold absolute power over King's Landing as the rebuilding process continues. A new challenger for the Iron Throne rises from an unexpected dark corner. HBO Canada, 10 p.m.
Call the Midwife
PBS unveils the second season of this acclaimed Brit-import drama, which follows the exploits of the nurses of Nonnatus House working in London's East End during the 1950s. As the new season opens, Jenny must confront an abusive husband. PBS, 8 p.m.