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Star Trek: Discovery S4E9 — Rubicon

5.9

Star Trek: Discovery•Season 4•Episode 9

Rubicon

5.9/10 · 2,368 votesFeb 17, 202244 min

Ranked #6 of 13 in Season 4•+0.1 vs season avg

Captain Burnham and the U.S.S. Discovery race to stop Book and Ruon Tarka from launching a rogue plan that could inadvertently endanger the galaxy.

Directed byAndi Armaganian

Written byAlan B. McElroy

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Seasons5

Season 4 Episodes13

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Kobayashi Maru

Anomaly still

Anomaly

Choose to Live still

Choose to Live

All Is Possible still

All Is Possible

The Examples still

The Examples

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Stormy Weather

...But to Connect still

...But to Connect

All In still

All In

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E9 5.9Now viewing

Rubicon

The Galactic Barrier still

The Galactic Barrier

Rosetta still

Rosetta

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Species Ten-C

Coming Home still

Coming Home

Cast7

Sonequa Martin-Green

Sonequa Martin-Green

Michael Burnham

Doug Jones

Doug Jones

Saru

Mary Wiseman

Mary Wiseman

Sylvia Tilly

Anthony Rapp

Anthony Rapp

Paul Stamets

Wilson Cruz

Wilson Cruz

Hugh Culber

Blu del Barrio

Blu del Barrio

Adira Tal

David Ajala

David Ajala

Cleveland 'Book' Booker

Crew2

Alan B. McElroy

Alan B. McElroy

Writer

A

Andi Armaganian

Director

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Episode Summary

"Rubicon" is episode 9 of Star Trek: Discovery season 4. It scored 5.9/10 from 2,368 votes, ranking #6 of 13 episodes this season (season average 5.8). Directed by Andi Armaganian and written by Alan B. McElroy, it aired on February 17, 2022.

Next: E10 · The Galactic Barrier Best of Season 4