THE WALKING DEAD
AMC, 8:00 p.m. ET
On Thursdays, AMC has begun repeating The Walking Dead in sequence, but with a difference: with the color drained from the image, so that it’s presented in old-school black and white. That gimmick alone may not be enough reason to revisit the show, but here’s a better reason: Tonight’s episode is the one set at the Center for Disease Control in Atlanta, where Rick and his band of desperate survivors beg for answers, and help, from a barricaded scientist played by Noah Emmerich – the intense actor now playing the FBI neighbor on The Americans.