There is nothing in the dark that isn’t there when the lights are on.
George Clayton Johnson (1929-2015) American writer
Twilight Zone, 3×16 “Nothing in the Dark”, closing narration (5 Jan 1962)
Often attributed to Rod Serling, who read the narration and produced the show.
This is part of the closing narration of episode 16, season 3—titled “Nothing in the Dark”—from /The Twilight Zone/. It was spoken by Rod Serling but written by George Clayton Johnson. See the Wikipedia articles for Johnson (http://bit.ly/2rBfOMg) and “Nothing in the Dark” (http://bit.ly/2sRhDJf), especially the section for “Closing narration.” There are a number of confusing YouTube videos of this episode (featuring a very young Robert Redford), but I found the closing narration in the middle of one of them (http://bit.ly/2sUf1d9), at 22:58.
I thought that might be it, but couldn’t quickly find a clear reference. Thanks. I will revised.
(Good episode, and, yes, a very young Redford.)