With Georgiou at the helm of the plan to end the Klingon war once and for all, the U.S.S. Discovery crew struggles to fathom and tolerate her hostile tactics. Memories of past hardships are rekindled within Burnham.

Sonequa Martin-Green (Commander Michael Burnham)
Doug Jones (Commander Saru)
Shazad Latif (Lt. Ash Tyler)
Anthony Rapp (Lt. Cmdr. Paul Stamets)
Mary Wiseman (Ensign Sylvia Tilly)
Jason Isaacs (Captain Gabriel Lorca)

Michelle Yeoh (Captain Philippa Georgiou)

Mia Kirshner (Amanda Grayson)
Jayne Brook (Admiral Katrina Cornwell)
Mary Chieffo (L'Rell)
James Frain (Ambassador Sarek)
Clint Howard (Orion Trader)

Michael Ayres (Transport Officer)
Matthew Binkley (Shavo)
Emily Coutts (Lt. Keyla Detmer)
Riley Gilchrist (Admiral Shukar)
Anthony Grant (Er' Toom)
Julianne Grossman (Discovery Computer)
Harry Judge (Admiral Gorch)
Morgan Kohan (Weapons Trader)
Patrick Kwok-Choon (Lt. Gen Rhys)
Crystal Leger (Klingon Player #2)
Clare McConnell (Dennas)
Damon Runyan (Ujilli)
Sara Mitich (Lt. Cmdr. Airiam)
Oyin Oladejo (Lt. Joann Owosekun)
Ronnie Rowe Jr. (Lt. Ronald Bryce)
David Benjamin Tomlinson (Klingon Player #1)
Bree Wasylenko (Shava)

• Season 1 Finale. Season 2 is scheduled to premier in early 2019.
  
• The U.S.S. Discovery crew receives the Federation medal of honor. Burnham is given a full pardon by the president of the Federation and her commission is reinstated. Tilly is promoted to Ensign, and Stamets is promoted to Lt. Commander.
  
• Ash Tyler leaves with L'Rell, who sets out to stop the war and unite the houses of the Klingon Empire.
  
• While en route to Vulcan to pick up their new captain, the crew receives a distress call from NCC-1701 U.S.S. Enterprise under command of Captain Pike.
  
• Jason Isaacs (Lorca) does not appear in this episode.