Star Trek: Discovery Season 4: Release Date, Cast, And More

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"Star Trek: Discovery" is about to boldly go into its fourth season, as Paramount+ continues to amass more ships in its fleet of streaming "Star Trek" shows. Sonequa Martin-Green, long since recovered from her zombification on "The Walking Dead," is back to captain the flagship, "Discovery," for season 4. Here's what we know about the upcoming episodes.

"Star Trek: Discovery" season 4 flies onto the Paramount+ streaming service on Thursday, November 18, 2021. You can watch it there in the U.S. if you have a subscription.

The international rights to "Star Trek" shows are split between Netflix and Amazon Prime Video. Unfortunately, global "Star Trek" fans don't have the same one-stop shopping option as Stateside viewers. However, in most countries outside the U.S. you can stream "Discovery" on Netflix and "Star Trek: Picard" on Amazon.

Though Paramount+ has expanded its streaming "Star Trek" universe to include four other shows — including "Picard" and the "Discovery" spin-off "Strange New Worlds" — "Star Trek: Discovery" is the show that started it all. It launched back in 2017 when Paramount+ was still calling itself CBS All Access. Trades reported at the time that "Discovery" prompted a record number of signups, and the show has been cruising through space ever since.

The series follows the adventures of the USS Discovery crew, led by Martin-Green's character, Michael Burnham. Season 1 revealed Burnham's backstory as a first officer turned mutineer turned prisoner turned parolee and xeno-anthropologist. She initially served as the science specialist aboard the USS Discovery under the anti-Klingon Starfleet captain, Gabriel Lorca (Jason Isaacs). In "Star Trek: Discovery" season 4, Burnham has moved up to the rank of full captain herself.

Alex Kurtzman and Michelle Paradise serve as the co-showrunners for "Star Trek: Discovery." We don't have much info yet on who is in the writer's room or directing the episodes for season 4.

In addition to Martin-Green, "Discovery" season 4 stars Doug Jones, Anthony Rapp, Mary Wiseman, and Wilson Cruz, all of whom have been with the show since the beginning.

David Ajala, Blu del Barrio, and Ian Alexander are also returning, along with some high-profile guest stars, including David Cronenberg, Oded Fehr, and Tig Notaro. That's the same Cronenberg who helmed films like "The Dead Zone," "The Fly," "A History of Violence," and "Eastern Promises." He showed off his acting chops in season 3 and will do so again in season 4.

There's also a cat onboard the Discovery, though if certain other non-"Star Trek," space-faring adventures have taught us anything, it's that what looks like a cat in space may in fact be a fearsome creature with a pocket dimension inside its body. Beware space cats.

"Five light years across. That's the size of the gravitational anomaly ..." that Captain Burnham and her crew are dealing with in "Star Trek: Discovery" season 4. In season 3, the show grappled with the aftermath of a 900-year time-jump to the future. As a result, "Discovery" is now far removed from other shows on the "Star Trek" timeline and "ready to seek out new life," per the "Trek" mission statement.

You can see the first teaser trailer for "Star Trek: Discovery" season 4 above.