Episode guide
The Expanse: Season 4
10 episodes · first aired Dec 13, 2019
With the Ring Gates now open to thousands of new planets, a blood-soaked gold rush begins, igniting new conflicts between Earth, Mars, and the Belt. Meanwhile, on one unexplored planet, the Rocinante crew gets caught in a violent clash between an Earth mining corporation and desperate Belter settlers as deadly, new threats from the protomolecule emerge.
- 1 New Terra Dec 13, 2019 · 51m · TMDB 8.1 The crew of the Roci investigates a strange protomolecule ruin on an alien planet. Bobbie copes with civilian life on Mars. Drummer and Ashford battle with piracy in the Belt.
- 2 Jetsam Dec 13, 2019 · 50m · TMDB 7.9 Avasarala is blindsided while on a visit to Mars. The Roci crew continue their protomolecule investigation while tensions between the RCE and Belters reach a tipping point. Drummer and…
- 3 Subduction Dec 13, 2019 · 47m · TMDB 8.0 New alien threats emerge on Ilus as Naomi battles health challenges on the planet. Bobbie searches for a missing person on Mars. Avasarala faces a new challenge in the UN.
- 4 Retrograde Dec 13, 2019 · 45m · TMDB 7.9 Drummer and Ashford confront a dangerous person from Naomi's past. Murtry hunts down a target. Bobbie's makes a life-changing confession.
- 5 Oppressor Dec 13, 2019 · 47m · TMDB 7.8 As tensions on Ilus reach a boiling point, Holden reveals a secret. Avasarala debates Nancy Gao while an emergency on the Roci forces Alex and Naomi into action.
- 6 Displacement Dec 13, 2019 · 50m · TMDB 8.0 The Roci crew prepares for an incoming disaster on Ilus. Ashford and Drummer close in on an enemy within the Belt. Bobbie takes on a dangerous job.
- 7 A Shot in the Dark Dec 13, 2019 · 46m · TMDB 8.0 Naomi and Alex work to keep the Barbapiccola in orbit amidst a power outage. Avasarala faces a tough decision. Holden and Elvi race to find a cure for a disease spreading on Ilus.
- 8 The One-Eyed Man Dec 13, 2019 · 54m · TMDB 8.2 Avasarala faces fallout for the UN's military mission. Ashford and Drummer makes big decisions about their future within the OPA. A spreading illness on Ilus takes a toll on Amos. Alex and…
- 9 Saeculum Dec 13, 2019 · 45m · TMDB 8.7 Holden and Miller race to save Ilus. Murtry puts his endgame into motion, putting the Roci crew's lives at risk.
- 10 Cibola Burn Dec 13, 2019 · 50m · TMDB 8.5 Ashford closes in on an enemy while uncovering a dangerous plot. Avasarala faces a crossroads in her personal and political life. The Roci crew works to reestablish life on Ilus in the…