Season One is the first season of Syfy's The Expanse. It premiered on December 14, 2015, and continued airing every Tuesday until February 2, 2016, consisting of ten one-hour episodes. The first episode was pre-released on November 23, 2015 on on-demand and streaming devices.

Production began in September 2014 and concluded on April 2015[1]. Principal filming dates were between October 28, 2014 through March 27, 2015.[2]

The first season is based on roughly 75% of the novel Leviathan Wakes by James S. A. Corey. It was developed for television by Alcon Entertainment.


Set hundreds of years in the future, after mankind has colonized the solar system. A hardened detective and a rogue ship's captain come together for what starts as a missing young woman and evolves into a race across the solar system to expose the greatest conspiracy in human history.

Cast Edit

Main Edit

Recurring Edit

Guest Edit

Episodes Edit

No. ovr. No. Image Title Writer(s) Director(s) Airdate
Miller "Dulcinea" Mark Fergus & Hawk Ostby Terry McDonough 11/23/2015
In the asteroid belt near Saturn, James Holden and the crew of the ice freighter Canterbury investigate a distress call from a mysterious derelict ship, the Scopuli. On Ceres Station, Detective Miller begins an off-the-books investigation of a missing heiress, Julie Mao.
TheExpanse recap 102 "The Big Empty" Mark Fergus & Hawk Ostby Terry McDonough 12/15/2015
Holden and crew fight for survival in a badly damaged shuttle. Miller uncovers clues about Julie Mao, as water rationing hits Ceres Station. On Earth, UN Deputy Undersecretary Chrisjen Avasarala interrogates a Belter terrorist.
Remember the Cant "Remember the Cant" Robin Veith Jeff Woolnough 12/15/2015 (online)
12/22/2015 (broadcast)
Holden and crew are taken prisoner aboard the Donnager, the flagship of the Martian Congressional Republic Navy, and begin to turn against each another. While contending with riots on Ceres, Miller connects Julie to the mysterious derelict ship, the Scopuli. Avasarala engages in a nasty game of politics with an old friend.
CQB "CQB" Naren Shankar Jeff Woolnough 12/15/2015 (online)
12/29/2015 (broadcast)
Holden and crew are caught in the middle of a desperate battle, as mysterious warships attack and board the Donnager. As he pursues Julie Mao, Miller’s partner, Havelock, goes missing.
105 "Back to the Butcher" Dan Nowak Robert Lieberman 1/5/2016
Holden and crew make a deal with an unlikely ally on Tycho Station. Along with his conspiracy theories about Julie Mao, Miller’s obsession with the missing girl intensifies.
TheExpanse recap 106 "Rock Bottom" Jason Ning Robert Lieberman 1/12/2016
Miller discovers revealing information on a hidden data cube. Holden and crew arrive at Tycho Station, surprised by their host’s hidden agenda.
TheExpanse recap 107 "Windmills" Daniel Abraham & Ty Franck Bill Johnson 1/19/2016
Holden and crew realize they’re not alone on the Rocinante and find themselves up against a Martian military blockade. Believing all is lost, Miller finds a new reason to forge ahead. Avasarala visits Holden’s family in Montana.
TheExpanse gallery 108Recap 04 "Salvage" Robin Veith Bill Johnson 1/26/2016
The crew of the Rocinante discovers a derelict vessel holding a secret that may destroy humankind. Holden and crew are led to Eros, where they finally cross paths with Miller, only to make a horrifying discovery. On Earth, Avasarala receives devastating news.
TheExpanse gallery 109Recap 01 "Critical Mass" Robin Veith & Dan Nowak & Naren Shankar Terry McDonough 2/2/2016
A flashback to Julie's origin story reveals her trajectory. Holden and Miller finally meet and team up to get to the bottom of the strange emergency situation happening on Eros. As the true horror of the events on Eros is revealed, an ailing Holden and Miller must overcome incredible odds if they hope to live to fight another day.
TheExpanse recap 110 "Leviathan Wakes" Mark Fergus & Hawk Ostby Terry McDonough 2/2/2016
Miller, Holden and his crew fight their way to the Rocinante to escape Eros. On Earth, Avasarala fears for the stability of Earth’s government and her family’s safety.

Legend Edit

Leviathan Wakes

Ratings Edit

Season One[10]

Airdate episode 18-49


Total viewers


Mon 1-01 0.33 1.189
Tues 1-02 0.27 0.854
Tues 1-03 0.15 0.676
Tues 1-04 0.17 0.633
Tues 1-05 0.22 0.631
Tues 1-06 0.22 0.713
Tues 1-07 0.17 0.502
Tues 1-08 0.25 0.721
Tues 1-09 0.20 0.555
Tues 1-10 0.20 0.555
Season Averages 0.22 0.702

Production Edit

Media Edit

  • Concept art - Alex Kamal, James Holden and Naomi Nagata on board the Knight.
  • Julie Mao
  • Detective Miller
  • Jim Holden
  • Alex Kamal
  • Naomi nagata
  • Amos Burton
  • Chrisjen Avasarala
Cast credits on-screen

These are the credits for the combined double episode 9 and 10. The articles for those individual episodes contain screenshots correlating with their respective shortened split-episode credits. Refer to the "Notes" sections for each of the episodes 9 "Critical Mass" and 10 "Leviathan Wakes" to see further discussion.

Cast interviews

Behind the Scenes Edit

Note: This is a generic section stub. Expand it by clicking Sprite-monaco-pencil Edit to right of the section title.

Trivia Edit

  • The Avasarala character does not appear in Leviathan Wakes, but for context to illustrate the conflict between Earth, Mars, and the Belt, scenes were added with some based partly on events in Caliban's War.
  • Shawn Doyle was added to the main cast bill beginning with the episode "The Big Empty" and onwards.
  • Chad L. Coleman was credited in the episode "Windmills" but did not make an appearance.
  • Sets were built in a sound stage in Toronto that were 3 stories high and occupied 80,000 sqft.
  • There was no pilot episode - SyFy ordered all 10 episodes of the first season at once.[15]
  • The second season was ordered before the first season begun airing.
  • Syfy released the episodes 1, 3 & 4 online before their actual airing.
  • In September 2017, it was noted that credits shown for streamed episodes on Amazon Instant Video were revised to include more stunt performer credits especially those stunt performers supporting major roles.  Also added were stunt wire team credits.  This appears on the Ultra HD stream,


  1. 17/09/A.-Cuthbertson_Sept-2017.pdf
  3. Hollywood Reporter - Thomas Jane to Star in Syfy's 'The Expanse' (Exclusive)
  4. Deadline - Dominique Tipper, Wes Chatham, More, Round Out ‘The Expanse’
  8. The Expanse Photos - Dulcinea 10 of 19
  11. Blastr - The Expanse showrunner Naren Shankar on Episode 4's big battles, Belter extreme sports, and Shed's head Adam Swiderski Wed, Dec 30, 2015 3:35pm
  12. 12.0 12.1 Variety - Syfy Returns to its Roots with ‘The Expanse,’ ‘Childhood’s End’ Laura Prudom, DECEMBER 14, 2015 12:53PM PT
  13. 13.0 13.1 Variety - ‘Iron Man’ Writers Enter Sci-Fi Mystery TV Project for Alcon, ‘The Expanse’ Jon Weisman SEPTEMBER 4, 2013 09:58AM PT
  14. SPACE - Syfy's 'The Expanse' Explores a Complicated Future on Far-Flung Worlds By Sarah Lewin, October 16, 2015 01:30pm ET
  15. This was one of the pre-conditions set during negotations with James S.A. Corey's agent and the production company and Syfy as stated in an interview with Naren Shankar by's podcast "Geek's Guide to the Galaxy"

See also Edit

Note: This is a generic section stub. Expand it by clicking Sprite-monaco-pencil Edit to right of the section title.

External links Edit

Community content is available under CC-BY-SA unless otherwise noted.