High Quality Content by WIKIPEDIA articles! "Devil`s Due" is the 13th episode of the fourth season of the science fiction television series Star Trek: The Next Generation and was originally aired on February 4, 1991 in broadcast syndication. The script was adapted from the cancelled Star Trek: Phase II 1978 television series, where it was written by William Douglas Lansford. The script was adapted by Philip Lazebnik and directed by Tom Benko.