Before the sappy "Twilight" movies there was another "Twilight" that shone far brighter and lasted far longer. It was, of course, Rod Serling's "The Twilight Zone," which makes its 20th yearly orbit on the Syfy Channel's marathon on Dec. 31.
"There is a fifth dimension beyond that which is known to man. . ." Serling would begin the anthology, his mouth taut, his voice staccato and mesmerizing.