Writers Glen Morgan and James Wong wrote the guest role of Melissa specifically for Kristen Cloke (Morgan's wife) after her series Space: Above and Beyond was canceled.
During regression hypnosis, Mulder reveals a belief that a specific group of souls reincarnates together in different roles. He identifies Scully as his father in a past life during the Holocaust and his sergeant during the Civil War, suggesting their connection is fundamental to their souls regardless of romantic status.
The episode is a direct reference to the Jonestown Massacre and the Waco siege . The cult leader's name, Vernon Ephesian , is a nod to David Koresh, whose birth name was Vernon Howell.
The episode opens and closes with Mulder reciting excerpts from the poem "Paracelsus" by Robert Browning, reflecting the episode's themes of longing and memory.
The "Temple of the Seven Stars" was one of the most expensive sets ever built for the series at that time.
An interesting feature of The X-Files Season 4, Episode 5, is its heavy reliance on real-life tragedy and its unique exploration of Mulder and Scully's "eternal" bond through reincarnation . Key Features and Trivia