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TV picks for the week of Oct. 4

A lot of our favorites return, including HBO's "The Leftovers." But not the people who vanished in that show's first season; they're not back. Well, some of them might be, kinda-sorta, but now I'm veering perilously close to spoiler territory, so never mind. Here's what caught my eye this week:tmpplchld Sunday: "Madam Secretary," 7 p.m., CBS: Season 2 begins.tmpplchld "Masterpiece," 7 p.m., PBS: The period drama "Home Fires" finds a group of English women preparing for World War II.tmpplchld "The Good Wife," 8 p.m., CBS: Season 7 begins.tmpplchld "Alaska: The Last Frontier," 8 p.m., Discovery: Season 5...