100 years in the future, when the Earth has been abandoned due to radioactivity, the last surviving humans live on an ark orbiting the planet — but the ark won't last forever. So the repressive regime picks 100 expendable juvenile delinquents to send down to Earth to see if the planet is still habitable.
Is this the best episode?
The peak run. Top 40% of seasons by average rating — consecutive, with an average of 8.31.
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Eliza Taylor
Clarke Griffin
Bob Morley
Bellamy Blake
Lindsey Morgan
Raven Reyes
Marie Avgeropoulos
Octavia Blake
Richard Harmon
John Murphy
Tasya Teles
Echo
JR Bourne
Russell Lightbourne
Shannon Kook
Jordan Green
Chuku Modu
Gabriel Santiago
Shelby Flannery
Hope Diyoza
All 100 episodes plotted by IMDb rating
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13 episodes • 2014Avg: 7.9
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Pilot | Mar 19, 2014 | 7.3 |
| 2 | Earth Skills | Mar 26, 2014 | 7.3 |
| 3 | Earth Kills | Apr 2, 2014 | 7.7 |
| 4 | Murphy's Law | Apr 9, 2014 | 7.7 |
| 5 | Twilight's Last Gleaming | Apr 16, 2014 | 8.0 |
| 6 | His Sister's Keeper | Apr 23, 2014 | 7.8 |
| 7 | Contents Under Pressure | Apr 30, 2014 | 8.0 |
| 8 | Day Trip | May 7, 2014 | 7.7 |
| 9 | Unity Day | May 14, 2014 | 8.1 |
| 10 | I Am Become Death | May 21, 2014 | 8.1 |
| 11 | The Calm | May 28, 2014 | 7.8 |
| 12 | We Are Grounders (1) | Jun 4, 2014 | 8.3 |
| 13 | We Are Grounders (2) | Jun 11, 2014 | 8.8 |
16 episodes • 2014Avg: 8.4
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | The 48 | Oct 22, 2014 | 8.2 |
| 2 | Inclement Weather | Oct 29, 2014 | 8.1 |
| 3 | Reapercussions | Nov 5, 2014 | 8.1 |
| 4 | Many Happy Returns | Nov 12, 2014 | 8.1 |
| 5 | Human Trials | Nov 19, 2014 | 8.3 |
| 6 | Fog of War | Dec 3, 2014 | 8.2 |
| 7 | Long Into an Abyss | Dec 10, 2014 | 8.4 |
| 8 | Spacewalker | Dec 17, 2014 | 8.8 |
| 9 | Remember Me | Jan 21, 2015 | 8.1 |
| 10 | Survival of the Fittest | Jan 28, 2015 | 8.1 |
| 11 | Coup de Grâce | Feb 4, 2015 | 8.6 |
| 12 | Rubicon | Feb 11, 2015 | 8.4 |
| 13 | Resurrection | Feb 18, 2015 | 8.5 |
| 14 | Bodyguard of Lies | Feb 25, 2015 | 8.6 |
| 15 | Blood Must Have Blood (1) | Mar 4, 2015 | 8.7 |
| 16 | Blood Must Have Blood (2) | Mar 11, 2015 | 9.2 |
16 episodes • 2016Avg: 7.6
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Wanheda (1) | Jan 21, 2016 | 7.7 |
| 2 | Wanheda (2) | Jan 28, 2016 | 8.1 |
| 3 | Ye Who Enter Here | Feb 4, 2016 | 8.6 |
| 4 | Watch the Thrones | Feb 11, 2016 | 8.4 |
| 5 | Hakeldama | Feb 18, 2016 | 7.8 |
| 6 | Bitter Harvest | Feb 25, 2016 | 8.0 |
| 7 | Thirteen | Mar 3, 2016 | 6.9 |
| 8 | Terms and Conditions | Mar 10, 2016 | 7.0 |
| 9 | Stealing Fire | Mar 31, 2016 | 7.1 |
| 10 | Fallen | Apr 7, 2016 | 7.2 |
| 11 | Nevermore | Apr 14, 2016 | 7.6 |
| 12 | Demons | Apr 21, 2016 | 7.2 |
| 13 | Join or Die | Apr 28, 2016 | 7.6 |
| 14 | Red Sky at Morning | May 5, 2016 | 7.5 |
| 15 | Perverse Instantiation (1) | May 12, 2016 | 7.7 |
| 16 | Perverse Instantiation (2) | May 19, 2016 | 7.9 |
13 episodes • 2017Avg: 8.1
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Echoes | Feb 1, 2017 | 7.6 |
| 2 | Heavy Lies the Crown | Feb 8, 2017 | 7.6 |
| 3 | The Four Horsemen | Feb 15, 2017 | 7.8 |
| 4 | A Lie Guarded | Feb 22, 2017 | 7.9 |
| 5 | The Tinder Box | Mar 1, 2017 | 8.1 |
| 6 | We Will Rise | Mar 15, 2017 | 7.7 |
| 7 | Gimme Shelter | Mar 22, 2017 | 7.7 |
| 8 | God Complex | Mar 29, 2017 | 7.9 |
| 9 | DNR | Apr 26, 2017 | 7.9 |
| 10 | Die All, Die Merrily | May 3, 2017 | 9.1 |
| 11 | The Other Side | May 10, 2017 | 8.1 |
| 12 | The Chosen | May 17, 2017 | 8.6 |
| 13 | Praimfaya | May 24, 2017 | 9.1 |
13 episodes • 2018Avg: 8.4Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Eden | Apr 24, 2018 | 8.5 |
| 2 | Red Queen | May 1, 2018 | 8.6 |
| 3 | Sleeping Giants | May 8, 2018 | 8.8 |
| 4 | Pandora's Box | May 15, 2018 | 8.4 |
| 5 | Shifting Sands | May 22, 2018 | 8.0 |
| 6 | Exit Wounds | Jun 5, 2018 | 8.0 |
| 7 | Acceptable Losses | Jun 19, 2018 | 8.0 |
| 8 | How We Get to Peace | Jun 26, 2018 | 8.3 |
| 9 | Sic Semper Tyrannis | Jul 10, 2018 | 8.4 |
| 10 | The Warriors Will | Jul 17, 2018 | 8.0 |
| 11 | The Dark Year | Jul 24, 2018 | 8.2 |
| 12 | Damocles (1) | Jul 31, 2018 | 8.7 |
| 13 | Damocles (2) | Aug 7, 2018 | 9.5 |
13 episodes • 2019Avg: 8.2Golden Era
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | Sanctum | Apr 30, 2019 | 8.3 |
| 2 | Red Sun Rising | May 7, 2019 | 8.3 |
| 3 | The Children of Gabriel | May 14, 2019 | 8.1 |
| 4 | The Face Behind the Glass | May 21, 2019 | 8.3 |
| 5 | The Gospel of Josephine | May 28, 2019 | 8.5 |
| 6 | Memento Mori | Jun 11, 2019 | 8.0 |
| 7 | Nevermind | Jun 18, 2019 | 8.2 |
| 8 | The Old Man and the Anomaly | Jun 25, 2019 | 8.0 |
| 9 | What You Take With You | Jul 9, 2019 | 8.1 |
| 10 | Matryoshka | Jul 16, 2019 | 8.2 |
| 11 | Ashes to Ashes | Jul 23, 2019 | 8.1 |
| 12 | Adjustment Protocol | Jul 30, 2019 | 8.5 |
| 13 | The Blood of Sanctum | Aug 6, 2019 | 8.0 |
16 episodes • 2020Avg: 7.3Valley of Despair
| # | Episode | Air Date | Rating |
|---|---|---|---|
| 1 | From the Ashes | May 20, 2020 | 7.5 |
| 2 | The Garden | May 27, 2020 | 8.0 |
| 3 | False Gods | Jun 3, 2020 | 7.3 |
| 4 | Hesperides | Jun 10, 2020 | 7.8 |
| 5 | Welcome to Bardo | Jun 17, 2020 | 8.3 |
| 6 | Nakara | Jun 24, 2020 | 7.5 |
| 7 | The Queen's Gambit | Jul 1, 2020 | 7.4 |
| 8 | Anaconda | Jul 8, 2020 | 9.0 |
| 9 | The Flock | Jul 15, 2020 | 7.7 |
| 10 | A Little Sacrifice | Aug 5, 2020 | 8.0 |
| 11 | Etherea | Aug 12, 2020 | 7.5 |
| 12 | The Stranger | Aug 19, 2020 | 7.5 |
| 13 | Blood Giant | Sep 9, 2020 | 4.8 |
| 14 | A Sort of Homecoming | Sep 16, 2020 | 6.1 |
| 15 | The Dying of the Light | Sep 23, 2020 | 6.4 |
| 16 | The Last War | Sep 30, 2020 | 6.7 |
