High Quality Content by WIKIPEDIA articles! "Blood" is the third episode of the second season of the science fiction television series The X-Files. It premiered on the Fox network on September 30, 1994. It was written by Glen Morgan and James Wong and was directed by David Nutter. The episode is a "Monster-of-the-Week" story, unconnected to the series` wider mythology. "Blood" earned a Nielsen household rating of 9.8, being watched by 8.7 million households in its initial broadcast. The episode received mostly positive reviews.