Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.

The episode was rated 7.87 from 4935 votes.

Bellamy and Lincoln’s attempt to sneak into Mount Weather has brutal consequences. Abby fights to stay in control as Clarke steps up in her new leadership role. Meanwhile, with Monty and Harper still missing, a desperate Jasper confronts President Wallace and demands answers.

The episode was rated 7.87 from 3457 votes.

Clarke and Lexa prepare for battle, while Raven and Wick experience a major setback. Meanwhile, Octavia and Lincoln are each forced to make a difficult decision. At Mount Weather, Jasper and Maya witness a horrible act, Bellamy follows through on a promise and Cage goes public with powerful information.

The episode was rated 7.89 from 3778 votes.

While preparing for battle, Clarke and Lexa have a heated discussion. Desperate for help, Raven has Wick summoned to the engineering room. Jaha and Murphy encounter a perilous roadblock. Meanwhile, at Mount Weather, Bellamy is in a race against time.

The episode was rated 7.89 from 3626 votes.

As Abby and Jaha each try to establish their authority, Clarke comes up with a plan to stop the Grounders' attack. At Mount Weather, Jasper, Monty, Miller and Harper plan their escape, as Dr. Tsing and Cage conduct deadly experiments.

The episode was rated 7.90 from 3945 votes.

Lexa tries to maintain peace and order within the clans. Clarke uncovers a strange and game-changing truth. A flashback takes us into the darker chapter of humanity’s past.

The episode was rated 7.91 from 4875 votes.

Clarke finds hope in the most unlikely place. Alie’s master plan comes together.

The episode was rated 7.92 from 5331 votes.

Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.

The episode was rated 7.96 from 5144 votes.

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 7.96 from 3146 votes.

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 8.02 from 3945 votes.

Our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.

The episode was rated 8.09 from 5588 votes.

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 8.15 from 4333 votes.

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 8.16 from 5135 votes.

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 8.22 from 4200 votes.

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 8.33 from 2637 votes.