The Expanse is an American space opera / mystery science fiction drama television series on Syfy, based on the series of novels by James S. A. Corey. Set in a future where humanity has colonized the Solar System, it follows United Nations executive Chrisjen Avasarala (Shohreh Aghdashloo), police detective Josephus Miller (Thomas Jane), and ship's officer Jim Holden (Steven Strait) and his crew as they unravel a conspiracy that threatens peace in the system and the survival of humanity. The series premiered on demand on November 23, 2015, and on Syfy on December 14, 2015.