After capturing the U.S.S. Discovery, Osyraa seeks a meeting with Admiral Vance while Burnham and the crew must overcome unimaginable odds as they attempt to regain command of their ship.

Sonequa Martin-Green (Commander Michael Burnham)
Anthony Rapp (Lt. Cmdr. Paul Stamets)
Mary Wiseman (Ensign Sylvia Tilly)
David Ajala (Cleveland Booker)

Oded Fehr (Admiral Charles Vance)
Noah Averbach-Katz (Ryn)
Janet Kidder (Osyraa)
Kenneth Mitchell (Aurellio)
Annabelle Wallis (Zora)
Jake Weber (Zareh)

Emily Coutts (Lt. Keyla Detmer)
Patrick Kwok-Choon (Lt. Gen Rhys)
Oyin Oladejo (Lt. Joann Owosekun)
Ronnie Rowe Jr. (Lt. Ronald Bryce)
Brendan Beiser (Eli the EMH)
Lisa Berry (Kanak)
Avaah Blackwell (Lt. Ina)
Nicole Dickinson (Strong Regulator)
Vanessa Jackson (Lt. Audrey Willa)
Lamont James (Regulator Guard #1)
Dorren Lee (Lt. Teemo)
Alexander Mandra (Avryz)
Fabio Tassone (Book's Ship Computer)
Roy Samuelson (Emerald Chain Computer)

• This is the 800th aired episode of Star Trek!
  
• Osyraa proposes Emerald Chain "merge" with the Federation… and she will remain in charge.
  
• Doug Jones (Captain Saru) and Wilson Cruz (Dr. Hugh Culber) do not appear in this episode, and their names do not appear in the opening credits.
  
• Kenneth Mitchell (Aurellio) previously played Klingon General Kol in season 1, as well as other related Klingons, before his ALS diagnosis. He appears here as human, also in his wheelchair.
  
• Stamets, in his pleas with Aurellio, refers to Culber as his partner and Adira as their child.
  
• The sphere data has transferred itself into the DOTs.