Complex sentence: Johannessen remained with Showtime as a producer for the new original drama series "Homeland" which was developed by his "The X-Files" and "24" colleagues Alex Gansa and Howard Gordon.
Split into simpler sentences: Johannessen remained with Showtime as a producer for the new original drama series "Homeland". The show was developed by his "The X-Files" and "24" colleagues Alex Gansa and Howard Gordon.