
Star Trek: Discovery Episode Rating Graph
Sep 2017 - present

Sep 2017 - present
7.6
Browse episode ratings trends for Star Trek: Discovery. Simply click on the interactive rating graph to explore the best and worst of Star Trek: Discovery's 57 episodes.
Loading...
The first episode of Star Trek: Discovery aired on September 24, 2017.
The last episode of Star Trek: Discovery aired on March 17, 2022.
There are 57 episodes of Star Trek: Discovery.
There are 5 seasons of Star Trek: Discovery.
Yes.
Star Trek: Discovery is set to return for future episodes.
S2 Ep14
8.2
18th Apr 2019
The U.S.S. Discovery battles against Control in a fight not only for their lives but for the future, with a little help from some unexpected friends. Spock and Burnham discern vital new connections between the red signals while Burnham faces one of life’s harshest truths: the right decisions are often the hardest to make.
S1 Ep9
8.1
12th Nov 2017
Bypassing Starfleet's orders, Lorca uses the U.S.S. Discovery crew's ultimate asset, the ship itself, in an effort to end the war with the Klingons once and for all.
S1 Ep13
8.0
28th Jan 2018
Lorca plans to move forward with a coup against the Emperor, propelling Burnham to make a quick decision to save not only herself, but the U.S.S. Discovery.
S2 Ep9
8.0
14th Mar 2019
When the Discovery crew infiltrates Section 31's headquarters, suspicions arise that the crew may have a traitor in their midst. Burnham tries to help Spock but her efforts don't go as planned.
S2 Ep8
8.0
7th Mar 2019
Spock and Burnham head to Talos IV, where the process of healing Spock forces the siblings to confront their troubled past. Stamets desperately tries to reconnect with Hugh, while Tyler struggles to shed the crew's suspicions of him due to his past as Voq.
S1 Ep12
8.0
21st Jan 2018
Burnham heads to the ISS Charon with a special "gift" for the Emperor. With the help of an unexpected source, Stamets gains clarity while trapped inside the mycelial network. Saru asks for L'Rell's help.
S2 Ep2
8.0
24th Jan 2019
A new signal appears, prompting Stamets' emotional return to the mycelial network and leading Burnham, Pike and Owosekun to a pre-warp planet, where they face a complex ethical dilemma. Tilly's overeagerness lands her in trouble but when the planet - and Discovery's landing party - are threatened, her curiosity may be the one thing that can save them.
S2 Ep10
7.9
21st Mar 2019
Burnham is stunned when she learns her ties to Section 31 run deeper than she ever fathomed. Armed with the identity of the Red Angel, the U.S.S. Discovery goes to work on its most critical mission to date.
S2 Ep13
7.9
11th Apr 2019
When the U.S.S. Discovery's crucial mission does not go according to plan, Burnham realizes what must ultimately be done. The crew prepares for the battle of a lifetime as Leland's Control ships get closer.
S2 Ep1
7.9
17th Jan 2019
After answering a distress signal from the U.S.S. Enterprise, the U.S.S. Discovery welcomes aboard Captain Christopher Pike and begins a new mission to investigate the meaning behind seven mysterious red signals. Michael Burnham grapples with her past growing up on Vulcan with her foster parents and brother Spock.
S1 Ep14
7.9
4th Feb 2018
Burnham and the U.S.S. Discovery crew are faced with the harsh reality of the war during their absence. In order to move forward, Starfleet must use unconventional tactics and sources to take their next action against the Klingons.
S2 Ep6
7.9
21st Feb 2019
When a new signal appears over Saru's home planet, Burnham, Saru and the crew embark on a perilous mission that puts Saru in danger and raises questions about the Red Angel's intentions. Hugh struggles to come to terms with his new reality.
S1 Ep3
7.9
1st Oct 2017
Burnham finds herself aboard the U.S.S. Discovery where she quickly realizes things are not as they seem, including the mysterious Captain Gabriel Lorca.
S2 Ep11
7.9
28th Mar 2019
Burnham receives the reunion she's been longing for, but it doesn't go quite as she imagined. Georgiou and Tyler sense a disturbing change in Leland.
S1 Ep15
7.9
11th Feb 2018
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.
S2 Ep12
7.9
4th Apr 2019
A fourth signal leads the U.S.S. Discovery to a world where Pike is forced to make a life-changing choice. Burnham and Spock investigate a Section 31 ship gone rogue, leading to a discovery with catastrophic consequences.
S1 Ep2
7.8
24th Sep 2017
Face to face with Klingon vessels, the U.S.S. Shenzhou prepares for the possibility of war if negotiations fail. Amidst the turmoil, Burnham looks back to her Vulcan upbringing for guidance.
S4 Ep4
7.0
9th Dec 2021
Tilly and Adira lead a team of Starfleet Academy cadets on a training mission that takes a dangerous turn. Meanwhile, Burnham is pulled into tense negotiations on Ni’Var.
S4 Ep6
7.2
23rd Dec 2021
Seeking answers, the U.S.S. Discovery ventures into a subspace rift created by the Dark Matter Anomaly. Meanwhile, Book faces a strange visitor from his past.
S4 Ep3
7.2
2nd Dec 2021
Burnham and Tilly hunt the killer of a Starfleet officer as Stamets and the science team race against the clock to prevent the anomaly from killing anyone else.
S4 Ep11
7.3
3rd Mar 2022
While Captain Burnham leads an away mission to a planet that was once home to the aliens responsible for the DMA, Book and Tarka secretly infiltrate the U.S.S. Discovery.
S4 Ep2
7.3
25th Nov 2021
Saru returns to help the U.S.S. Discovery uncover the mystery of an unusually destructive new force. As Burnham leads the crew, she must also find a way to help Book cope with an unimaginable loss.
S4 Ep5
7.4
16th Dec 2021
Burnham and Book race to evacuate a group of stranded colonists in the anomaly’s path as one of the Federation’s brightest scientists comes aboard the U.S.S. Discovery to do high-stakes research with Saru and Stamets.
S4 Ep8
7.4
10th Feb 2022
Following a hunch, Captain Burnham tracks Book to an old haunt from their courier days and gets drawn into a high-stakes competition for a powerful weapon.
S4 Ep10
7.4
24th Feb 2022
Captain Burnham and her crew must go where few have gone before: beyond the Galactic Barrier. Meanwhile, Book learns the truth of what drives Ruon Tarka.
S4 Ep9
7.4
17th Feb 2022
Captain Burnham and the U.S.S. Discovery race to stop Book and Ruon Tarka from launching a rogue plan that could inadvertently endanger the galaxy.
S3 Ep9
7.4
10th Dec 2020
The U.S.S. Discovery crew journey to a mysterious planet in hopes of finding a cure for Georgiou's deteriorating condition. Stamets and Adira make a stunning breakthrough with the newly acquired Burn data.
S4 Ep7
7.4
30th Dec 2021
Tensions rise as representatives from across the galaxy gather to confront the threat of the Dark Matter Anomaly. Zora's new sentience raises difficult questions.
S3 Ep8
7.4
3rd Dec 2020
Osyraa attacks Book's home planet and the Discovery travels there to help. Stamets and Adira investigate The Burn.
S4 Ep1
7.5
18th Nov 2021
After months spent reconnecting the Federation with distant worlds, Captain Michael Burnham and the crew of the U.S.S. Discovery are sent to assist a damaged space station – a seemingly routine mission that reveals the existence of a terrifying new threat.
S3 Ep10
7.5
17th Dec 2020
Georgiou uncovers the true depths of the plot against her, leading her to a revelation about how deeply her time on the U.S.S. Discovery truly changed her.
S4 Ep13
7.5
17th Mar 2022
The DMA approaches Earth and Ni’Var. With evacuations underway, Burnham and the team aboard the U.S.S. Discovery must find a way to communicate and connect with a species far different from their own before time runs out.
S3 Ep4
7.5
5th Nov 2020
Burnham and Adira visit the Trill homeworld while Saru's efforts on the Discovery to help the crew reconnect yield surprises.
S3 Ep11
7.6
24th Dec 2020
Discovery ventures to the Verubin Nebula, where Burnham, Saru, and Culber make a shocking realization about the origin of the Burn. The rest of the crew faces an unexpected threat.
S1 Ep1
7.7
24th Sep 2017
While patrolling Federation space, the U.S.S. Shenzhou encounters an object of unknown origin, putting First Officer Michael Burnham to her greatest test yet.
S1 Ep2
7.8
24th Sep 2017
Face to face with Klingon vessels, the U.S.S. Shenzhou prepares for the possibility of war if negotiations fail. Amidst the turmoil, Burnham looks back to her Vulcan upbringing for guidance.
S1 Ep3
7.9
1st Oct 2017
Burnham finds herself aboard the U.S.S. Discovery where she quickly realizes things are not as they seem, including the mysterious Captain Gabriel Lorca.
S1 Ep4
7.8
8th Oct 2017
With tensions and stakes high as Starfleet continues in their efforts to end the war with Klingons, Burnham begins to settle in to her new position aboard the U.S.S. Discovery.
S1 Ep5
7.7
15th Oct 2017
Lorca unexpectedly finds himself in the company of a prisoner of war, Starfleet Lieutenant Ash Tyler, and a notorious intergalactic criminal, Harry Mudd. Meanwhile, Burnham voices her concerns about the repercussions of the spore drive jumps on “Ripper.”
S1 Ep6
7.8
22nd Oct 2017
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.
S1 Ep7
7.7
29th Oct 2017
As the U.S.S. Discovery crew attempts to let loose at a party, an unwelcome visitor comes aboard bringing about a problematic and twisted sequence of events.
S1 Ep8
7.6
5th Nov 2017
The U.S.S. Discovery is tasked with a high priority mission to planet Pahvo and learn the science behind the Klingon's cloaking technology.
S1 Ep9
8.1
12th Nov 2017
Bypassing Starfleet's orders, Lorca uses the U.S.S. Discovery crew's ultimate asset, the ship itself, in an effort to end the war with the Klingons once and for all.
S1 Ep10
7.8
7th Jan 2018
While in unfamiliar territory, the U.S.S. Discovery crew is forced to get creative in their next efforts to survive opposing and unprecedented forces and return home.
S1 Ep11
7.8
14th Jan 2018
The crew continues their guise, and Burnham is ordered on a merciless mission to end the resistance in hopes of returning home. Meanwhile, Tilly works on restoring Stamets’ neurofunction.
S1 Ep12
8.0
21st Jan 2018
Burnham heads to the ISS Charon with a special "gift" for the Emperor. With the help of an unexpected source, Stamets gains clarity while trapped inside the mycelial network. Saru asks for L'Rell's help.
S1 Ep13
8.0
28th Jan 2018
Lorca plans to move forward with a coup against the Emperor, propelling Burnham to make a quick decision to save not only herself, but the U.S.S. Discovery.
S1 Ep14
7.9
4th Feb 2018
Burnham and the U.S.S. Discovery crew are faced with the harsh reality of the war during their absence. In order to move forward, Starfleet must use unconventional tactics and sources to take their next action against the Klingons.
S1 Ep15
7.9
11th Feb 2018
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.