The 100 - Season 4
1 - Echoes
Air Date: February 1, 2017
Clarke and her friends struggle with how to proceed after the fate of the world is revealed.
2 - Heavy Lies the Crown
Air Date: February 8, 2017
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
Air Date: February 15, 2017
Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.
4 - A Lie Guarded
Air Date: February 22, 2017
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
Air Date: March 1, 2017
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
Air Date: March 15, 2017
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
Air Date: March 22, 2017
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
Air Date: March 29, 2017
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
Air Date: April 26, 2017
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
Air Date: May 3, 2017
Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.
11 - The Other Side
Air Date: May 10, 2017
Clarke faces the consequences of her fateful choice.
12 - The Chosen
Air Date: May 17, 2017
Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.
13 - Praimfaya
Air Date: May 24, 2017
It's a race against the end of the world as Praimfaya arrives forcing our heroes to make impossible decisions to ensure their survival.