In the 24th century, a disparate band of antiheroes unravel a vast conspiracy that threatens the Solar System's fragile state of cold war.
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Series cast summary:
Wes Chatham ...  Amos Burton 59 episodes, 2015-2021
Dominique Tipper ...  Naomi Nagata 59 episodes, 2015-2021
Steven Strait ...  Jim Holden 57 episodes, 2015-2021
Shohreh Aghdashloo ...  Chrisjen Avasarala 57 episodes, 2015-2021
Cas Anvar ...  Alex Kamal 56 episodes, 2015-2021
Frankie Adams ...  Roberta 'Bobbie' W. Draper / ... 49 episodes, 2017-2021
Cara Gee ...  Camina Drummer 37 episodes, 2017-2021
Shawn Doyle ...  Sadavir Errinwright 28 episodes, 2015-2018
Thomas Jane ...  Joe Miller 24 episodes, 2015-2019
Florence Faivre ...  Julie Mao 24 episodes, 2015-2018


Two hundred years in the future, in a fully colonized solar system, police detective Josephus Miller (Thomas Jane), who was born in the asteroid belt, is given the assignment to find a missing young woman; Julie Mao (Florence Faivre). Meanwhile, James Holden (Steven Strait), the first officer of an ice freighter, is witness to an unprovoked attack upon the ship, by craft believed to be from Mars (MCRN Federation). As news of the attack spreads throughout the system, the incident's flow-on threatens to destabilize already tenuous relations between Earth, Mars and The Belt. Far away from the struggles in deep space, on Earth, Chrisjen Avasarala (Shohreh Aghdashloo), a powerful United Nations executive and diplomat, works to prevent war between Earth and Mars by any means. Soon, the 3 find out the missing woman and the ice freighter's fate are part of a vast covert conspiracy which threatens all humanity. Written by nano_tech

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Did You Know?


In Season 3, Melba is wearing a jumpsuit branded from "Savage Industries". This has been confirmed by the writers as an in-show nod to Expanse superfan and behind-the-scenes host Adam Savage from Discovery Channel's Mythbusters. See more »

User Reviews

Season 4
15 December 2019 | by Kajohns49See all my reviews

When I heard that SyFy was cancelling the series after 3 seasons I was very surprised. Since the beginning this show has had an excellent story, interesting world building, a great cast and good production values. I thought it was one of the better series on TV, not just science fiction but including all genres. I was gratified to find out that Amazon picked this up and was eagerly awaiting its release. Well, I just finished season 4 and am pleased to announce that the high quality series has returned! My only regret is that for some reason I thought this season was 13 episodes instead of 10 and I wasn't willing for this to be over. I have never read the book(s?) this is based on so that has nothing to do with my review. I will only say that to anyone discovering this series for the first time I envy you! When I saw S4 E10 I got a little sad that it was over. Season 5 looks like it will be fantastic as well!

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Canada | USA



Release Date:

23 November 2015 (USA) See more »

Also Known As:

The Expanse See more »

Filming Locations:

Toronto, Ontario, Canada See more »

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Technical Specs


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Aspect Ratio:

2.39 : 1
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