"Kaddish" is the fifteenth episode of the fourth season of the American science fiction television series "The X-Files". It was written by producer Howard Gordon and directed by Kim Manners. The episode originally aired on the Fox network on February 16, 1997. The episode is a "Monster-of-the-Week" story, a stand-alone plot unconnected to the series' wider mythology, or overarching history. The episode received a Nielsen household rating of 10.3 and was viewed by 16.56 million viewers. It received moderately positive reviews from critics.