Star Trek: Discovery - Season 1, Episode 6 - Rotten Tomatoes


Critic Consensus: "Lethe" takes a twisty risk with established Star Trek lore to create a satisfyingly entertaining episode.

Episode Info

The U.S.S. Discovery crew is intrigued by new addition Lt. Ash Tyler. Sarek seeks Burnham's help, rekindling memories from her past. Admiral Cornwell questions Lorca's tactics.


Jason Isaacs
as Captain Lorca
Michelle Yeoh
as Captain Georgiou
Doug Jones
as Lt. Saru
Anthony Rapp
as Lt. Stamets
Shazad Latif
as Lt. Tyler
Rekha Sharma
as Commander Landry
Maulik Pancholy
as Dr. Nambue
Mary Wiseman
as Sylvia Tilly
Sam Vartholomeos
as Ensign Connor
Rainn Wilson
as Harry Mudd
Terry Serpico
as Brett Anderson
Wilson Cruz
as Dr. Hugh Culber
View All

News & Interviews for Lethe

Lethe Photos

Critic reviews for Lethe

Discovery isn't screwing around when it comes to exposing Lorca's inner darkness, which is bringing true edge to the series.

October 22, 2017 | Rating: B+ | Full Review…

This episode was fun and entertaining, and while the war was mentioned and on the background, the fact that they focus more on building characters and developing the relationships between them was what made it my favourite episode of the series so far.

August 18, 2018 | Full Review…

Star Trek: Discovery has been getting tighter with each episode, but in last night's "Lethe," the show turned a corner into addictively good storytelling.

May 22, 2018 | Full Review…

A series about war doesn't allow for much positive learning, and that's where Discovery fails its protagonist and many Star Trek fans who just want some fun exploring in the stars to start their week.

March 14, 2018 | Full Review…

I like Kol; he's the only Klingon character with any pizzazz, and I can totally see the Empire uniting under him.

October 30, 2017 | Full Review…

All that really, truly matters is if the show is any good. Does it hold my interest? Am I not entertained, as it were? And so far, the answer is mostly yes.

October 25, 2017 | Full Review…

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