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The list below provides the sequential order of the episodes of The 100.

Series Overview

Season Episodes Originally aired (U.S. dates) DVD/Blu-ray
Release
Season Premiere Season Finale
1 13 March 19, 2014 June 11, 2014 September 23, 2014
2 16 October 22, 2014 March 11, 2015 October 13, 2015
3 16 January 21, 2016 May 19, 2016 July 19, 2016
4 13 February 1, 2017 May 24, 2017 July 18, 2017

Season 1

# Image Title Writer(s) Director Airdate
1 Pilot 026 "Pilot" Jason Rothenberg Bharat Nalluri March 19, 2014
Set in the distant future, 97 years after a nuclear apocalypse has devastated the surface of Earth, the only remaining humans are residents of a flotilla of orbiting space stations known as “The Ark”. 100 juveniles convicted of various crimes are sent to the surface to test its habitability. Among them is 17-year-old Clarke Griffin, the daughter of the Ark's chief medical officer and chief engineer. As the 100 explore, back on the Ark the leader of the Ark, Chancellor Jaha, has been shot, causing Councilman Kane, the second in command, to take charge.
2 Earth Skills 074 (Jasper) "Earth Skills" Jason Rothenberg Dean White March 26, 2014
Having discovered that Jasper may still be alive, Clarke, Bellamy, Octavia, Finn and Monty set out on a mission to locate their friend and are shocked at what they find. Meanwhile, on the Ark, Abby is determined to get to Earth and enlists Raven to repair a broken 130-year-old Russian Mir-3 escape pod.
3 Earth Kills 038 (Clarke, Wells, and Finn) "Earth Kills" Elizabeth Craft
Sarah Fain
Dean White April 2, 2014
In a desperate attempt to treat Jasper’s festering wounds, Clarke, Finn and Wells set out in search of a seaweed antibiotic. Bellamy (Bob Morley) and his crew go hunting for food and are joined by Charlotte (guest star Izabela Vidovic), a lovable 12-year-old who feels safe under Bellamy’s protection. A thick, acidic fog appears, forcing Clarke, Finn, and Wells to seek shelter inside an ancient van. While they are trapped, Clarke confronts Wells about his betrayal that resulted in her father’s death.
4 Murphy's Law 027 (Murphy) "Murphy's Law" T.J. Brady
Rasheed Newson
P. J. Pesce April 9, 2014
CRIME AND PUNISHMENT - After the shocking death of one of their own, Clarke and Finn grow closer as they try to figure out a way to communicate with the Ark. Bellamy must keep the group from turning on one another as life on Earth takes a desperate turn. Meanwhile, Abby risks having herself floated in order to give Raven the chance to stow-away in the escape pod bound for Earth.
5 Twilight's Last Gleaming 031 (Bellamy and Raven) "Twilight's Last Gleaming" Bruce Miller Milan Cheylov April 16, 2014
THE LAST RESORT – Clarke’s newfound romance with Finn is threatened. Octavia suffers a blow to the head and wakes up to find a Grounder watching her. On the Ark, Abby exposes Kane's plan to reduce the population of the Ark. Jaha and Abby notice a signal and realize at least some of the 100 must still be alive on Earth.
6 The 100 1x06 Octavia blood "His Sister's Keeper" Tracy Bellomo
Dorothy Fortenberry
Wayne Rose April 23, 2014
GONE GIRL - Bellamy leads his crew into Grounder territory as they search for Octavia. Raven can't help but notice the deep connection between Finn and Clarke. Meanwhile, flashbacks reveal Bellamy and Octavia's childhood on the Ark.
7 Clarke-Raven-Contents-under-pressure "Contents Under Pressure" Akela Cooper
Kira Snyder
John Showalter April 30, 2014
Clarke and Raven make contact with the Ark, and Abby guides Clarke through a dangerous procedure in a desperate move to save one of their own. Meanwhile, on the Ark, Abby is removed from the council and former Chancellor Diana Sydney takes her place. Jaha reveals to Abby that there are not enough drop ships for everyone on the Ark to go down to Earth and Kane deals with his guilt over his recent decision.
8 Day Trip 041 (Jasper and Octavia) "Day Trip" Elizabeth Craft
Sarah Fain
Andrei Haq
Matt Barber May 7, 2014
Clarke and Bellamy go on a mission to find supplies for approaching winter. Some of The 100 accidentally eat nuts with powerfully hallucinogenic properties and lose their grasp on reality. Meanwhile, Octavia seizes the opportunity to help a friend escape and a terrifying event brings Clarke and Bellamy closer. On the Ark, Commander Shumway secretly assigns one of the 100 to kill one of his own and the treacherous actions of Diana Sydney are revealed.
9 Unity Day 074 (Clarke and Anya) "Unity Day" Kim Shumway
Kira Snyder
John Behring May 14, 2014
Clarke and Finn attempt to broker peace with the Grounders but all hell breaks loose when Bellamy, Jasper, and Raven show up armed and ready for battle. Octavia and Lincoln grow closer. Meanwhile, tragedy strikes during the Unity Day celebration on the Ark.
10 I Am Become Death 014 (Clarke and Murphy) "I Am Become Death" Rasheed Newson
T.J. Brady
Omar Madha May 21, 2014
Murphy returns to camp claiming to have been held captive and tortured by the Grounders. Clarke and Bellamy have very different opinions on how to handle his return. Octavia sneaks away to find Lincoln and returns with a serious warning for the 100. Meanwhile, a mysterious virus strikes camp, forcing many to be quarantined. Jasper pulls off a heroic move.
11 The Calm 035 (Clarke and Finn) "The Calm" Bruce Miller Mairzee Almas May 28, 2014
With a low food supply at camp, Clarke and Finn lead a group out to hunt for food and wind up in a compromising position. With Finn's life in danger, Clarke makes a game-changing decision. Meanwhile, Raven makes Bellamy an offer he can't refuse. On the Ark, Kane risks his life and is reunited with Chancellor Jaha and Abby.
12 We Are Grounders (Part 1) 015 (Clarke) "We Are Grounders (Part 1)" Akela Cooper
Tracy Bellmo
Dean White June 4, 2014
Clarke and Finn escape one dangerous situation only to find themselves faced with a new enemy. Bellamy makes a heroic move to save Jasper. Raven faces a new danger and Murphy finally gets his revenge. Meanwhile, those remaining on the Ark are coming to terms with the inevitable.
13 We Are Grounders (Part 2) 096 (Mountain Men) "We Are Grounders (Part 2)" Jason Rothenberg Dean White June 11, 2014
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.

Season 2

# Image Title Writer(s) Director Airdate
1 Clarke2 2x01 "The 48" Jason Rothenberg Dean White October 22, 2014
Clarke is still alone in the white room, frantically trying to make sense of her bizarre surroundings. The fate of Bellamy, Finn, and Raven is still unknown. Lincoln and Octavia's daring plan is thwarted and an enemy returns. Meanwhile, Abigail, Kane, and the survivors of the Ark must face physical and moral dilemmas in their dangerous and beautiful new world. Finally, Chancellor Jaha makes a heroic decision.
2 Inclement weather promo image octavia grounder "Inclement Weather" Michael Angeli John F. Showalter October 29, 2014
A suspicious Clarke confronts President Dante Wallace and demands answers. Kane interrogates one of The 100 and Abby performs emergency surgery. Meanwhile, Octavia resorts to violence in order to find Lincoln.
3 Reapercussions promo picture jasper maya monty "Reapercussions" Aaron Ginsburg
Wade McIntyr
Dean White November 5, 2014
When Clarke discovers a horrifying project being carried out in Mount Weather’s medical ward, she joins forces with an unlikely ally. After Abigail confesses to committing a crime, Kane issues an order to have her brutally punished. Meanwhile, Monty warns a distracted Jasper that Clarke could be in trouble and Octavia continues to fight for Lincoln.
4 Happy returns (3) "Many Happy Returns" Kim Shumway P.J. Pesce November 12, 2014
After being betrayed by someone she thought she could trust, Clarke takes matters into her own hands and proves she’s not going down without a fight. Bellamy, Finn, and Murphy race against time to save a stranger. Meanwhile, tensions rise between Raven and Wick while working together and an unexpected reunion occurs.
5 Human Trials 023 (Clarke, Bellamy, and Octavia) "Human Trials" Charlie Craig Ed Fraiman November 19, 2014
Kane leads a mission to make peace with the Grounders. Meanwhile, Jasper agrees to participate in a risky experiment, Lincoln enters a world of pain, and President Dante Wallace issues a warning. Finally, Finn's search for Clarke takes a violent turn.
6 Fog of War 004 (Clarke and Bellamy) "Fog of War" Kira Snyder Steven DePaul December 3, 2014
Tensions run high between Clarke and Finn while Raven discovers that Mount Weather is interfering with their communication systems. Meanwhile, Jasper and Monty discover the truth about what's going on at Mount Weather and Octavia comes face-to-face with her worst nightmare. Finally, President Dante Wallace is about to be betrayed by those closest to him.
7 Long Into an Abyss 070 (Clarke and Lexa) "Long Into an Abyss" James Thorpe Antonio Negret December 10, 2014
Abby is determined to find a way to protect her people from a coming attack by the Grounders, even if it means heading into unknown territory and leaving some captives behind. A worried Bellamy convinces Clarke to go with him to the dropship, where he and Octavia reveal a dangerous secret. Clarke comes up with a bold new plan to stop the Grounders’ attack, leading Abby to a desperate decision. Meanwhile, at Mount Weather, Jasper and Monty begin to question the motives of their new friends while Dr. Tsing conducts a deadly experiment to determine how to make use of the captives.
8 Spacewalker 033 (Clarke, Bellamy, and Finn) "Spacewalker" Bruce Miller John F. Showalter December 17, 2014
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.
9 Remember Me "Remember Me" Dorothy Fortenberry Omar Madha January 21, 2015
The alliance between Camp Jaha and the Grounders is jeopardized when Gustus is poisoned. Meanwhile, at Mount Weather, Monty lands himself in hot water.
10 Survival of the Fittest 046 (Clarke and Lexa) "Survival of the Fittest" Akela Cooper Dean White January 28, 2015
Clarke and Lexa encounter a new enemy. Bellamy and Lincoln agree to work together to break into Mount Weather. Murphy helps Jaha confront his past. Indra makes Octavia an offer she can't refuse.
11 PromoCage 2x11 "Coup de Grâce" Charlie Craig P.J. Pesce February 4, 2015
CLARKE AND ABBY FACE OFF — 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.
12 PromoEmoriSkyPeople 2x12 "Rubicon" Aaron Ginsburg
Wade McIntyre
Mairzee Almas February 11, 2015
Tensions between Clarke and Abby come to a head after Clarke crosses the line. Raven helps Bellamy navigate Mount Weather. Jaha and Murphy encounter a stranger who may not be what she seems. Octavia is prepared to fight for someone she loves. Meanwhile, things reach a breaking point at Mount Weather.
13 MillerMontyJasper2x13image "Resurrection" Bruce Miller Dean White February 18, 2015
Clarke begins to question Lexa’s leadership decisions. Abby struggles to help an injured Kane. Indra continues to push Octavia. Meanwhile, at Mount Weather, Jasper steps up into the role of leader and Cage throws Maya into a life-threatening situation.
14 PromoClarkeLexa 2x14 "Bodyguard of Lies" Kim Shumway Uta Briesewitz February 25, 2015
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.
15 PromoClarke 2x15 "Blood Must Have Blood (Part 1)" Aaron Ginsburg
Wade McIntyre
Omar Madha March 4, 2015
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.
16 Clarkegun "Blood Must Have Blood (Part 2)" Jason Rothenberg Dean White March 11, 2015
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 his people struggle to break free.

Season 3

# Image Title Writer(s) Director Airdate
1 PromoMurphy301 "Wanheda (Part 1)" Jason Rothenberg Dean White January 21, 2016
Three months have passed since the tragedy at Mount Weather and our heroes learn that a bounty has been put on Clarke’s head. Unbeknownst to Clarke, a team led by Bellamy and Kane journeys deep into Grounder territory to save her. Meanwhile, Murphy finds his way to the mansion and discovers a very different Jaha on a very different mission.
2 PromoRoanClarke302 "Wanheda (Part 2)" Aaron Ginsburg
Wade McIntyre
Mairzee Almas January 28, 2016
Bellamy and Kane risk life and limb to rescue Clarke. In an attempt to avoid worrying about her daughter, Abby focuses on whether to open Mount Weather as a medical facility. Meanwhile, Murphy plots to betray his former Chancellor.
3 KanePolisGuards "Ye Who Enter Here" Kim Shumway Antonio Negret February 4, 2016
Clarke wrestles with a decision. Bellamy learns something isn't what it seems. Meanwhile Murphy plots to betray his former Chancellor.
4 S3 epiosde 4 - Nia "Watch the Thrones" Dorothy Fortenberry Ed Fraiman February 11, 2016
Clarke discovers the mastermind behind a devious plan. Kane struggles to keep the peace. Meanwhile, Jasper’s grief drives him to reckless behavior.
5 S3 episode 5 Jaha, Pike & Alie "Hakeldama" Charlie Craig Tim Scanlan February 18, 2016
Clarke’s hopes for peace are dashed by a new threat. Raven becomes a target. Meanwhile, Murphy is running a dangerous con.
6 3x06 Titus Lexa and Clarke "Bitter Harvest" Kira Snyder Dean White February 25, 2016
Clarke is torn between vengeance and mercy. Meanwhile, Kane and Octavia work together to avert a disaster, and Abby continues to worry about Raven.
7 Thirteen 017 "Thirteen" Javier Grillo-Marxuach Dean White March 3, 2016
Lexa tries to maintain peace and order within the clans, and Clarke uncovers a strange and game-changing truth. Meanwhile, a flashback takes us into the darker chapter of humanity’s past.
8 S3 episode 8 - Sinclair & Lincoln "Terms and Conditions" Charlie Craig John Showalter March 10, 2016
Kane is searching for a peaceful way to handle things but soon realizes he may be forced to resort to drastic measures. Meanwhile, Pike suspects that there may be a leak within the walls of Arkadia. Lastly, Raven has a plan and reaches out to Jasper for help.
9 309FuneralAden "Stealing Fire" Heidi Cole McAdams Uta Briesewitz March 31, 2016
Clarke discovers a shocking truth, and Octavia is forced to make a decision that could have devastating consequences. Meanwhile, Kane and Abby share a moment.
10 S3 episode 10 - Fallen pic 5 "Fallen" Charmaine DeGrate
Javier Grillo-Marxuach
Matt Barber April 7, 2016
Jaha employs a terrifying new method to convince Abby to join his cause, Kane is on a mission, and Bellamy is hit with a hard truth. Meanwhile, Monty finds himself in a precarious situation, and Jasper rushes to save one of his own.
11 Nevermore 092 "Nevermore" Kim Shumway Ed Fraiman April 14, 2016
A.L.I.E. forces Raven’s dark side to come out, and Jasper's anger continues to grow. Meanwhile, Octavia wrestles with her place in the world, and Monty is forced to make a split-second decision that has horrifying consequences.
12 S3 episode 12 (Demons) - Raven & Monty "Demons" Justine Gillmer P.J. Pesce April 21, 2016
Jaha returns to Polis, and Murphy has a surprise encounter. Meanwhile, Octavia uncovers a clue.
13 S3 episode 13 - Pike & Jaha "Join or Die" Julie Benson
Shawna Benson
Dean White April 28, 2016
Clarke is on a mission that could change everything. Meanwhile, Murphy gains insight that might prove useful in ensuring his survival. Lastly, Kane reaches a breaking point.
14 Clarke Luna 3x14 "Red Sky at Morning" Lauren Muir
Kira Snyder
P. J. Pesce May 5, 2016
Clarke, Bellamy, Octavia and Jasper hit a tragic roadblock. Meanwhile, Raven and Monty make an important discovery. 
15 Perverse-I harper roan clarke "Perverse Instantiation (Part 1)" Aaron Ginsburg
Wade McIntyre
Ed Fraiman May 12, 2016
Clarke finds hope in the most unlikely place. Meanwhile, A.L.I.E.'s master plan comes together.
16 Perverse-I 2 clarke "Perverse Instantiation (Part 2)" Jason Rothenberg Dean White May 19, 2016
Clarke, Bellamy, and Murphy begin to face the reality of their tragic situation. Everyone prepares for a final showdown.

Season 4

# Image Title Writer(s) Director Airdate
1 Worried "Echoes" Jason Rothenberg Dean White February 1, 2017
Clarke and her friends struggle with how to proceed after the fate of the world is revealed.
2 The Gang "Heavy Lies the Crown" Justine Juel Gillmer Ed Fraiman 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 (Promo 6 (Jackson, Murphy, and Abby) "The Four Horsemen" Heidi Cole McAdams P.J. Pesce 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 "A Lie Guarded" Kim Shumway Ian Samoil 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 Promo 9 (Roan and Echo) "The Tinder Box" Morgan Gendel John F. Showalter 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 5 (Octavia and Ilian) "We Will Rise" Charmaine DeGrate Dean White March 15, 2017
Clarke and Roan must work together in hostile territory in order to deliver an invaluable asset to Abby and her team.
7 Gimme Shelter 7 (Harper) "Gimme Shelter" Terri Hughes Burton
Ron Milbauer
Tim Scanlan 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 pic 1 (Indra, Kane, Monty, Gaia) "God Complex" Lauren Muir Omar Madha 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 The 100 - DNR pic 11 - Indra & Gaia "DNR" Miranda Kwok Mairzee Almas 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 The 100 4x10 - Indra & Octavia "Die All, Die Merrily" Aaron Ginsburg
Wade McIntyre
Dean White May 3, 2017
Octavia fights in the final battle for her people's survival, but not everyone is willing to play fair.
11 The 100 4x11 - Clarke, Miller, Murphy pic 1 "The Other Side" Julie Bensen
Shawna Bensen
Henry Ian Cusick May 10, 2017
Clarke faces the consequences of her fateful choice.
12 The 100 4x12 The Chosen - Octavia pic 3 "The Chosen" Aaron Ginsburg
Wade McIntyre
Alex Kalymnious May 17, 2017
Jaha and Kane disagree over how to handle their grim reality. Meanwhile, Clarke leads a group to save a friend.
13 4x13PP "Praimfaya" Jason Rothenberg Dean White 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.

See Also

The 100 TV Series

The 100 • Seasons ( OneTwoThreeFour ) • Episode GuideTranscriptsPromo Images

Production ( CastCrewBackstageMusicTitle Sequence ) • Other ( RatingsMerchandise )

References