HOMELAND
Showtime, 9:00 p.m. ET
This long-running series, on the other hand, just gets stronger each episode this season. And last week, Carrie and Saul finally shared the screen, as she had to go with him for help with a particularly thorny dilemma —which she was in because of setting up a completely unauthorized surveillance operation. At this point, motives of almost all the players remain murky. But the central plot, about the mysterious murder of an American general using a rare chemical agent, has so many echoes to recent headlines (about the former Russian spy killed on British soil) that it’s creepy. And compelling.