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.
Table of Contents
#1 – Damocles (2)
Season 5 – Episode 13
In part two of the fifth season finale, Clarke and her friends must risk everything to fight one last battle for survival, only to glimpse an even darker threat to the last living valley on Earth.
The episode was rated from 2637 votes.
#2 – We Are Grounders (2)
Season 1 – Episode 13
Clarke pleads with Bellamy to do the right thing as conflict on the ground comes to a head. Bellamy forces Octavia to make a difficult decision. Raven and Jasper work against time and Finn makes a bold move. Meanwhile, the situation on the Ark comes to a stunning conclusion.
The episode was rated from 4200 votes.
#3 – Praimfaya
Season 4 – Episode 13
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 episode was rated from 5135 votes.
#4 – Blood Must Have Blood (2)
Season 2 – Episode 16
The journey to the City of Light continues, and Jaha makes a move that shocks Murphy. Clarke receives help from an unexpected source, a visitor surprises Octavia, and Lincoln gets his revenge. Meanwhile, at Mount Weather, Cage moves forward with his mission and Bellamy and the group struggle to break free.
The episode was rated from 4333 votes.
#5 – Perverse Instantiation (2)
Season 3 – Episode 16
Our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.
The episode was rated from 5588 votes.

#6 – Spacewalker
Season 2 – Episode 8
Clarke returns to Camp Jaha with devastating news. Finn struggles with the aftermath of his actions. Abby gathers information from an unlikely source and prepares for a fight. Meanwhile, flashbacks reveal Finn and Raven’s relationship on the Ark.
The episode was rated from 3945 votes.
#7 – The Flock
Season 7 – Episode 9
Murphy and Indra must defuse a tense situation. Meanwhile, old friends make new allegiances.
The episode was rated from 5 votes.
#8 – Sleeping Giants
Season 5 – Episode 3
Bellamy leads the charge investigating a potential way home. Meanwhile, Clarke and Madi deal with the new, uncertain threat to their home.
The episode was rated from 3146 votes.
#9 – Die All, Die Merrily
Season 4 – Episode 10
Octavia fights in the final battle for her people’s survival, but not everyone is willing to play fair.
The episode was rated from 5144 votes.
#10 – Perverse Instantiation (1)
Season 3 – Episode 15
Clarke finds hope in the most unlikely place. Alie’s master plan comes together.
The episode was rated from 5331 votes.