Season 4
2017 · 13 episodes · 9h 3m in all · 7.6/10
The fight to survive has torn The 100 apart, turned them against each other, and taken the lives of their closest friends. Last season, our heroes found themselves at the epicenter of both the Grounder world and the struggle for Arkadia’s soul. Despite their best efforts, war appeared unavoidable, until a new, even more dangerous threat – one that had been quietly rising all along – exploded to the surface: ALIE, the A.I. that ended the world, offered relief from pain and eternal life in the “City of Light.” But as her ranks grew, it quickly became clear that she was building an army dedicated to controlling all sentient life on Earth. This was no longer a battle between warring factions; it was a fight for humanity itself. Now, a hard truth lands on the shoulders of those who remain. Will they go quietly into the night, or will they find hope and faith in each other, as they face their darkest chapter yet?

Episodes

1. Echoes
1 Feb 2017 · 43 min · 7.2/10
Clarke and her friends struggle with how to proceed after the fate of the world is revealed.

2. Heavy Lies the Crown
8 Feb 2017 · 42 min · 7.4/10
The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will live and die.

3. The Four Horsemen
15 Feb 2017 · 41 min · 7.7/10
Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.

4. A Lie Guarded
22 Feb 2017 · 42 min · 7.6/10
Continued struggles with leadership and trust in Arkadia and Polis take violent turns while Abby leads a team to a distant location hoping to find answers.

5. The Tinder Box
1 Mar 2017 · 40 min · 7.8/10
Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her people.

6. We Will Rise
15 Mar 2017 · 42 min · 7.7/10
Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby through enemy territories.

7. Gimme Shelter
22 Mar 2017 · 42 min · 7.7/10
Clarke's arrival on the island quickly takes a turn for the worse. Meanwhile, Bellamy tries to avoid further tragedy in Arkadia.

8. God Complex
29 Mar 2017 · 42 min · 7.7/10
After a disappointing discovery, Clarke and Abby question how far they're willing to go. Meanwhile, Jaha finds a lead to the mysterious Second Dawn.

9. DNR
26 Apr 2017 · 42 min · 7.4/10
Jasper and Bellamy go on a quest. Meanwhile, Clarke struggles to keep the peace after word of Jaha's discovery spreads.

10. Die All, Die Merrily
3 May 2017 · 42 min · 7.6/10
Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.

11. The Other Side
10 May 2017 · 42 min · 7.5/10
Clarke faces the consequences of her fateful choice.

12. The Chosen
17 May 2017 · 42 min · 7.8/10
Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.

13. Praimfaya
24 May 2017 · 41 min · 8.3/10
It's a race against the end of the world as Praimfaya arrives forcing our heroes to make impossible decisions to ensure their survival.
The 100 Season 4: quick answers
How many episodes are in The 100 Season 4?
Season 4 of The 100 has 13 episodes, about 9 hours in total.
When did The 100 Season 4 come out?
Season 4 premiered on 1 Feb 2017.
What is the best episode of The 100 Season 4?
By viewer score, episode 13, “Praimfaya”, at 8.3/10.