Spoiler warning: Plot and/or ending details follow.

Lethe is the sixth episode of Star Trek: Discovery in the program's first season, which premiered on 22 October 2017 exclusively on CBS All Access.



Michael BurnhamKatrina CornwellAmanda GraysonGabriel LorcaSarekSaruPaul StametsTerralSylvia TillyAsh TylerV'Latak
Referenced only 
Ellen LandryRauseSpockWebb

Starships and vehiclesEdit

USS Discovery (Crossfield-class)
Referenced only 
USS Enterprise


Cancri IVCancri systemVulcan
Referenced only 
GrazerYridiaYridia Nebula

Races and culturesEdit


States and organizationsEdit

StarfleetUnited Federation of Planets

Science and technologyEdit

eugenicsmycelial networksensorspaceSpore drivestarship

Ranks and titlesEdit


Other referencesEdit

green teatranspo drill





Star Trek: Discovery episodes
Season 1 "The Vulcan Hello" • "Battle at the Binary Stars" • "Context Is For Kings" • "The Butcher's Knife Cares Not for the Lamb's Cry" • "Choose Your Pain" • "Lethe" • "Magic to Make the Sanest Man Go Mad" • "Si Vis Pacem, Para Bellum" • "Into the Forest I Go" • "Despite Yourself" • "The Wolf Inside"


published order
Previous episode:
Choose Your Pain
Star Trek episode produced Next episode:
Magic to Make the Sanest Man Go Mad
Previous episode:
Choose Your Pain
Star Trek episode aired Next episode:
Magic to Make the Sanest Man Go Mad
chronological order

External linksEdit

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