Here is The Expanse Season 4 Teaser teaser trailer. At just 50 seconds it gives a more rounded look at the tensions and characters of Season 4.
The Promo teaser shows how with the Ring Gates now open to thousands of new planets, a blood-soaked gold rush begins. This is igniting new conflicts between Earth, Mars, and the Belt. Meanwhile, on one unexplored planet – Ilus, the Rocinante crew gets caught in a violent clash. The trouble is between an Earth mining corporation and desperate Belter settlers as deadly new threats from the protomolecule emerge.
We notice that the ‘baddie’ Adolphus Murtry is played by British actor Burn Gorman. He is perhaps best known for his role in Doctor Who spin-off Torchwood. Why are us British always the baddies?
We also get an example of the new freedom of a streaming service – some swearing!
The Expanse Season 4 is due December 13, 2019, on Amazon Prime Video. In the meantime you might like to check out the books the series is based on.