Complex sentence: In "The X-Files", Mulder follows a similar course; after returning to life in this episode, he investigates several cases during the remainder of the season until his disappearance at the beginning of season nine in "Nothing Important Happened Today".
Split into simpler sentences: In "The X-Files", Mulder follows a similar course. After returning to life in this episode, he investigates several cases during the remainder of the season until his disappearance at the beginning of season nine in "Nothing Important Happened Today".