"The Ghost Network" is the third episode of the first season of the American science fiction drama television series Fringe. The episode was written by co-executive producer David H. Goodman and supervising producer J. R. Orci, and was directed by Frederick E. O. Toye. The episode follows the Fringe team's investigation into a bus that was filled with amber, encasing the people inside. They discover a man named Roy (Zak Orth) who predicted it and other similar events, and Walter realizes Roy has connections to a past experiment he did over twenty years ago, called the "Ghost Network".
The episode was important in the show's evolution, as the writers noted that Roy was the first guest character the audience could get emotionally invested in. "The Ghost Network" also included their quest to explain seemingly impossible and weird phenomenon through a real scientific explanation from Walter's past research.
It first aired on the Fox network in the United States on September 23, 2008.