Seasons & Episodes
Pilot
97 years after a nuclear war, human kind is living in space. 100 juvenile delinquents are sent down to Earth to see if t
Earth Skills
Discovering that Jasper may still be alive, Clarke, Bellamy, Finn, Wells and Murphy head out to find him. On the Ark, Ab
Earth Kills
As a dangerous, acidic fog approaches, Clarke, Finn and Wells set out in search of a seaweed-like plant to make an antib
Murphy's Law
Bellamy, Clarke and Finn try to protect Charlotte when everyone learns she killed Wells. On the Ark, Abby risks getting
Twilight's Last Gleaming
A plan to contact the Ark is put in motion after Raven crash lands on Earth. Meanwhile, Abby exposes Kane's plan to redu
His Sister's Keeper
Bellamy, Finn and Jasper head into Grounder territory to search for Octavia, as flashbacks show the siblings' difficult
Contents Under Pressure
While Bellamy tortures the Grounder, Raven and Clarke make contact with the Ark and ask Abby to help them save Finn. On
Day Trip
Shumway secretly orders one of the 100 to kill Bellamy. Meanwhile, hallucinogenic nuts provide Octavia with an opportuni
Unity Day
Finn arranges a meeting with Clarke and the leader of the Grounders in order to bring peace, however a sceptical Clarke
I Am Become Death
Murphy returns to the camp carrying a horrific virus created by the Grounders to weaken the camp. After learning the Gro
The Calm
Clarke and Finn are captured by Anya, who forces them to save the life of a victim of the explosion. Meanwhile, Raven de
We Are Grounders (1)
Clarke and Finn come face to face with a new enemy after Lincoln rescues them from Anya, while Bellamy, Raven, Octavia a
We Are Grounders (2)
As the remaining members of the 100 face off against the Grounders, Jaha makes a noble sacrifice to ensure the Ark makes
The 48
Clarke is still on her own in the white room, frantically attempting to make sense of her bizarre surroundings. Lincoln
Inclement Weather
Clarke wants answers from the President. Abby performs emergency surgery. Octavia will do anything to find Lincoln.
Reapercussions
After discovering a horrifying project in Mount Weather's medical ward, Clarke joins forces with an unexpected ally.
Many Happy Returns
Clarke ends up being betrayed by somebody that she trusted. Bellamy, Finn and Murphy attempt to save a stranger.
Human Trials
Kane takes part in a mission to make peace with the Grounders. Jasper decides to take part in a risky experiment. Lincol
Fog of War
Tensions are running high between Clarke and Finn. Raven finds out that Mount Weather is interfering with their communic
Long Into an Abyss
Bellamy is able to get Clarke to agree to accompany him to the drop ship. Dr. Tsing is in charge of a deadly experiment.
Spacewalker
Clarke comes back to Camp Jaha with some shocking news. Finn has to face the consequences of his actions.
Remember Me
Lexa and Clarke manage to make a deal.The newly created alliance is under threat. Monty comes up with a plan.
Survival of the Fittest
Lives are left in danger following the arrival of a new threat. Lincoln and Bellamy decide to break into Mount Weather.
Coup de Grâce
Lincoln and Bellamy's efforts to get into Mount Weather has some brutal consequences.
Rubicon
Clarke is faced with a difficult choice and Raven helps Bellamy navigate Mount Weather as Dr. Tsing begins to harvest th
Resurrection
Clarke begins to question Lexa's leadership decisions and Indra continues to push Octavia. Meanwhile, at Mount Weather,
Bodyguard of Lies
Lexa and Clarke get into a heated discussion during battle preparations; Bellamy races against time.
Blood Must Have Blood (1)
Wick and Raven are faced with a setback. Maya and Jasper witness a terrible act.
Blood Must Have Blood (2)
Jaha makes a surprising move. Clarke gets help from an unexpected source. Lincoln seeks revenge.
Wanheda (1)
Three months have passed since the tragedy at Mount Weather and our heroes learn that a bounty has been put on Clarke’
Wanheda (2)
Bellamy and Kane risk life and limb to rescue Clarke. In an attempt to avoid worrying about her daughter, Abby focuses o
Ye Who Enter Here
Clarke wrestles with a decision. Bellamy learns that something isn't what it seems. Meanwhile, Murphy plots to betray hi
Watch the Thrones
Clarke discovers the mastermind behind a devious plan. Kane struggles to keep the peace. Meanwhile, Jasper’s grief dri
Hakeldama
Pike's twisted crusade threatens Clarke's attempts for peace. Raven becomes a target, while Murphy tries to conspire aga
Bitter Harvest
Clarke is torn between vengeance and mercy. Meanwhile, Kane and Octavia work together to avert a disaster, and Abby cont
Thirteen
Lexa tries to maintain peace and order within the clans, and Clarke uncovers a strange and game-changing truth. Meanwhil
Terms and Conditions
Kane is searching for a peaceful way to handle things but soon realizes he may be forced to resort to drastic measures.
Stealing Fire
Clarke discovers a shocking truth, and Octavia is forced to make a decision that could have devastating consequences. Me
Fallen
Jaha employs a terrifying new method to convince Abby to join his cause, Kane is on a mission, and Bellamy is hit with a
Nevermore
Alie forces Raven’s dark side to come out, and Jasper’s anger continues to grow. Meanwhile, Octavia wrestles with he
Demons
Jaha returns to Polis, and Murphy has a surprise encounter. Meanwhile, Octavia uncovers a clue.
Join or Die
Clarke is on a mission that could change everything. Meanwhile, Murphy gains insight that might prove useful in ensuring
Red Sky at Morning
Clarke, Bellamy, Octavia and Jasper hit a tragic roadblock. Meanwhile, Raven and Monty make an important discovery.
Perverse Instantiation (1)
Clarke finds hope in the most unlikely place. Meanwhile, Alie’s master plan comes together.
Perverse Instantiation (2)
Our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.
Echoes
Clarke and her friends struggle with how to proceed after the fate of the world is revealed.
Heavy Lies the Crown
The burden of leading weighs heavily upon Clarke and Bellamy when different challenges force them to determine who will
The Four Horsemen
Jaha leads Clarke and Bellamy down a road to possible salvation while tensions rise in Arkadia and Polis.
A Lie Guarded
Continued struggles with leadership and trust in Arkadia and Polis take violent turns while Abby leads a team to a dista
The Tinder Box
Clarke makes a desperate plea with a former allied force in an attempt to avoid a war and ensure the survival of her peo
We Will Rise
Clarke and Roan are forced to work together when they are tasked to deliver a dangerous but crucial asset to Abby throug
Gimme Shelter
Clarke's arrival on the island quickly takes a turn for the worse. Meanwhile, Bellamy tries to avoid further tragedy in
God Complex
After a disappointing discovery, Clarke and Abby question how far they're willing to go. Meanwhile, Jaha finds a lead to
DNR
Jasper and Bellamy go on a quest. Meanwhile, Clarke struggles to keep the peace after word of Jaha's discovery spreads.
Die All, Die Merrily
Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.
The Other Side
Clarke faces the consequences of her fateful choice.
The Chosen
Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.
Praimfaya
It's a race against the end of the world as Praimfaya arrives forcing our heroes to make impossible decisions to ensure
Eden
Clarke struggles to survive on a desolate, scorched earth while her friends in space come across a long-awaited beacon o
Red Queen
Octavia is forced to take guidance from an unlikely ally when the future of the bunker and all those inside it is jeopar
Sleeping Giants
Bellamy leads the charge investigating a potential way home. Meanwhile, Clarke and Madi deal with the new, uncertain thr
Pandora's Box
Our Heroes are forced to rely on the help of Shallow Valley's dangerous new inhabitants in order to save some of their o
Shifting Sands
Octavia leads her people towards Shallow Valley against the advice of Clarke and Bellamy. Meanwhile, Kane and Abby adjus
Exit Wounds
Kane's attempt to prove himself useful tests Wonkru's allegiance to Octavia. Madi faces an unexpected threat inside Wonk
Acceptable Losses
Clarke and Bellamy make a startling discovery about Wonkru’s battle plans as Echo risks her friendship with Raven to c
How We Get to Peace
Clarke’s determination to protect Madi puts Bellamy in an impossible position.
Sic Semper Tyrannis
The growing fractures in Wonkru threaten to explode once and for all. Meanwhile, in Shadow Valley, Murphy starts a fire,
The Warriors Will
Monty strives to show Wonkru an alternative to war, and to the valley itself. Meanwhile, Abby’s health continues to de
The Dark Year
As Clarke races to save Abby, she learns more about the trials and tribulations Wonkru faced in the bunker, and the impo
Damocles (1)
Octavia leads her people into war. While behind enemy lines, our heroes must overcome their differences to save Wonkru f
Damocles (2)
Clarke and her friends must risk everything to fight one last battle for survival, only to glimpse an even darker threat
Sanctum
Still reeling after receiving Monty’s message, a small group goes down to explore the mysterious new planet. Back on t
Red Sun Rising
The team on the ground flights to survive the threat they face on the new planet. Meanwhile, Raven must join forces with
The Children of Gabriel
Clarke tries to win over the leaders of Sanctum in order to let her people stay. Meanwhile, Bellamy, Echo and Octavia di
The Face Behind the Glass
Clarke embraces the traditions of Sanctum and tries to make amends for her past actions.
The Gospel of Josephine
Jordan investigates Sanctum. Meanwhile, Octavia and Diyoza discover the threats of the new planet firsthand. Lastly, Bel
Memento Mori
Diyoza learns more about the mysterious Children of Gabriel while Abby continues searching for a way to save Kane.
Nevermind
Clarke’s past catches up to her.
The Old Man and the Anomaly
Octavia and Diyoza make their way to the mysterious anomaly in search of the Old Man. Meanwhile, Murphy has an offer fo
What You Take With You
Bellamy must venture into enemy territory with an unlikely companion. Meanwhile, Octavia is forced to confront her past.
Matryoshka
Russell seeks justice. Meanwhile, Gabriel must make a difficult choice. Lastly, the Blake siblings reunite.
Ashes to Ashes
Bellamy and Octavia must work together to save their friends. Echo is forced to face her past.
Adjustment Protocol
A special Naming Day changes everything in Sanctum. Gabriel comes face to face with an old friend.
The Blood of Sanctum
Sanctum becomes a battleground between the devout and the non-believers. The mystery of the anomaly deepens.
From the Ashes
Clarke and her friends attempt to rebuild Sanctum as a new threat rises in the woods.
The Garden
Echo and Gabriel learn more about Hope and her mysterious past.
False Gods
Raven faces an unexpected threat. Clarke must keep the peace among opposing factions in Sanctum.
Hesperides
Mysterious outsiders arrive with news of Clarke's missing people.
Welcome to Bardo
Octavia gets to know a whole new world. Meanwhile, Murphy and Emori play make believe.
Nakara
Clarke and her friends find themselves on a planet that is not what it seems.
The Queen's Gambit
Emori tries to heal Sanctum's old familial wounds while Echo, Octavia and Diyoza struggle with new ones.
Anaconda
Clarke confronts a new adversary. A surprising connection takes us back to the past and to the nuclear apocalypse that d
The Flock
Murphy and Indra must defuse a tense situation. Old friends make new allegiances.
A Little Sacrifice
Sheidheda makes his move. A Disciple goes rogue.
Etherea
Where in the universe is Bellamy Blake?
The Stranger
It's a new day in Sanctum. Clarke, Octavia, Raven and Echo struggle with a new foe.
Blood Giant
The red sun derails Clarke's plans.
A Sort of Homecoming
Clarke and her friends reckon with all that has happened only to find an unexpected threat looming.
The Dying of the Light
Clarke and Octavia mount a desperate rescue mission as the Disciples close in on what they want.
The Last War
After all the fighting and loss, Clarke and her friends have reached the final battle. But is humanity worthy of somethi
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