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
All episodes — Season 4
S4 E1Echoes
Feb 1, 20177.143 min
Clarke and her friends struggle with how to proceed after the fate of the world is revealed.
S4 E2Heavy Lies the Crown
Feb 8, 20177.442 min
The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will live and die.
S4 E3The Four Horsemen
Feb 15, 20177.641 min
Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.
S4 E4A Lie Guarded
Feb 22, 20177.542 min
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.
S4 E5The Tinder Box
Mar 1, 20177.740 min
Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her people.
S4 E6We Will Rise
Mar 15, 20177.642 min
Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby through enemy territories.
S4 E7Gimme Shelter
Mar 22, 20177.542 min
Clarke's arrival on the island quickly takes a turn for the worse. Meanwhile, Bellamy tries to avoid further tragedy in Arkadia.
S4 E8God Complex
Mar 29, 20177.642 min
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.
S4 E9DNR
Apr 26, 20177.442 min
Jasper and Bellamy go on a quest. Meanwhile, Clarke struggles to keep the peace after word of Jaha's discovery spreads.
S4 E10Die All, Die Merrily
May 3, 20177.542 min
Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.
S4 E11The Other Side
May 10, 20177.442 min
Clarke faces the consequences of her fateful choice.
S4 E12The Chosen
May 17, 20177.742 min
Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.
S4 E13Praimfaya
May 24, 20178.241 min
It's a race against the end of the world as Praimfaya arrives forcing our heroes to make impossible decisions to ensure their survival.