Star Trek: Discovery The Galactic Barrier (Season 4, Episode 10)
TV-MA
TV Episode | 52 min | Action, Adventure, Drama

Star Trek: Discovery

The Galactic Barrier (Season 4, Episode 10)

TV-MA

TV Episode | 52 min | Action, Adventure, Drama

Captain Burnham and her crew must go where few have gone before: beyond the Galactic Barrier. Meanwhile, Book learns the truth of what drives Ruon Tarka.

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Cast	+ Add Cast
26 cast members

Name	Known for
Sonequa Martin-Green Michael Burnham Michael Burnham See fewer	Star Trek: Discovery (2017)
Doug Jones Cmdr. Saru Cmdr. Saru See fewer	Hellboy II: The Golden Army (2008)
Anthony Rapp Lt. Cmdr. Paul Stamets Lt. Cmdr. Paul Stamets See fewer	Rent (2005)
Wilson Cruz Dr. Hugh Culber Dr. Hugh Culber See fewer	Star Trek: Discovery (2017)
Blu del Barrio Adira Adira See fewer	Star Trek: Discovery (2017)
David Ajala Cleveland Booker Cleveland Booker See fewer	Jupiter Ascending (2015)
Oded Fehr Admiral Charles Vance Admiral Charles Vance See fewer	House of David (2025)
David Cronenberg Kovich Kovich See fewer	The Fly (1986)
Shawn Doyle Ruon Tarka Ruon Tarka See fewer	Star Trek: Discovery (2017)
Chelah Horsdal Federation President Laira Rillak Federation President Laira Rillak See fewer	The Man in the High Castle (2015)
Tara Rosling President T'Rina President T'Rina See fewer	Star Trek: Discovery (2017)
Annabelle Wallis Zora (voice) Zora (voice) See fewer	The Mummy (2017)
Hiro Kanagawa Dr. Hirai Dr. Hirai See fewer	Star Trek: Discovery (2017)
Phumzile Sitole Capt. Ndoye Capt. Ndoye See fewer	The Good Fight (2017)
Osric Chau Oros Oros See fewer	2012 (I) (2009)
Emily Coutts Lt. Cmdr. Keyla Detmer Lt. Cmdr. Keyla Detmer See fewer	Star Trek: Discovery (2017)
Patrick Kwok-Choon Lt. Cmdr. Gen Rhys Lt. Cmdr. Gen Rhys See fewer	Star Trek: Discovery (2017)
Oyin Oladejo Lt. Cmdr. Joann Owosekun Lt. Cmdr. Joann Owosekun See fewer	Star Trek: Discovery (2017)
Ronnie Rowe Lt. Cmdr. R.A. Bryce (as Ronnie Rowe Jr.) Lt. Cmdr. R.A. Bryce (as Ronnie Rowe Jr.) See fewer	Star Trek: Discovery (2017)
Sara Mitich Lt. Cmdr. Nilsson Lt. Cmdr. Nilsson See fewer	Star Trek: Discovery (2017)
Orville Cummings Lt. Christopher Lt. Christopher See fewer	Star Trek: Discovery (2017)
David Benjamin Tomlinson Lt. J.G. Linus Lt. J.G. Linus See fewer	Three for the Road (2020)
Christopher Allen Orion Guard Orion Guard See fewer	Star Trek: Discovery (2017)
Robinne Fanfair Zora (voice) Zora (voice) See fewer	Holidazed (2024)
Kyle James Butler Human Delegate (uncredited) Human Delegate (uncredited) See fewer	The Man from Toronto (2022)
Craig Henry Emerald Chain Guard (uncredited) Emerald Chain Guard (uncredited) See fewer	Code 8 (2019)