Here is the episode guide for The 100. Each episode has the title, writer, director, and a description listed. The descriptions are sourced from official press releases
15 - Perverse Instantiation - Part Two
Written By: Jason Rothenberg Directed By: Dean White Rating: 0.5 Audience: 1.29 In the season’s epic and mind-bending conclusion, our heroes begin to face the reality of their tragic situation. Everyone prepares for a final showdown.
15 - Perverse Instantiation - Part One
Written By: Aaron Ginsburg & Wade McIntyre Directed By: Ed Fraiman Rating: 0.4 Audience: 1.17 Clarke finds hope in the most unlikely place. Meanwhile, Alie’s master plan comes together.
14 - Red Sky at Morning
Written By: Lauren Muir & Kira Snyder Directed By: P. J. Pesce Rating: 0.4 Audience: 1.13 Clarke, Bellamy, Octavia and Jasper hit a tragic roadblock. Meanwhile, Raven and Monty make an important discovery.
13 - Join or Die
Written By: Julie Benson & Shawna Benson Directed By: Dean White Rating: 0.4 Audience: 1.27 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.
12 - Demons
Written By: Justin Juel Gillmer Directed By: P.J. Pesce Rating: 0.4 Audience: 1.15 Jaha returns to Polis, and Murphy has a surprise encounter. Meanwhile, Octavia uncovers a clue
11 - Nevermore
Written By: Kim Shumway Directed By: Ed Fraiman Rating: 0.4 Audience: 1.08 Alie 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.
10 - Fallen
Written By: Charmaine DeGrate & Javier Grillo-Marxuach Directed By: Matt Barber Rating: 0.4 Audience: 1.13 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
09 - Stealing Fire
Written By: Heidi Cole McAdams Directed By: Uta Briesewitz Rating: 0.4 Audience: 1.23 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.
08 - Terms and Conditions
Written By: John Showalter Directed By: Charlie Craig Rating: 0.4 Audience: 1.20 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
07 - Thirteen
Written By: Dean White Directed By: Javier Grillo-Marxauch Rating: 0.5 Audience: 1.39 Clarke is torn between vengeance and mercy. Meanwhile, Kane and Octavia work together to avert a disaster, and Abby continues to worry about Raven
06 - Bitter Harvest
Written By: Kira Snyder Directed By: Dean White Rating: 0.6 Audience: 1.41 Clarke is torn between vengeance and mercy. Meanwhile, Kane and Octavia work together to avert a disaster, and Abby continues to worry about Raven
05 - Hakeldama
Written By: Charlie Craig Directed By: Tim Scanlan Rating: 0.5 Audience: 1.36 Clarke’s hope for peace are dashed by a new threat. Raven becomes a target. Meanwhile, Murphy is running a dangerous con
04 - Watch the Thrones
Written By: Dorothy Fortenberry Directed By: Ed Fraiman Rating: 0.5 Audience: 1.32 Clarke discovers the mastermind behind a devious plan. Kane struggles to keep the peace. Meanwhile, Jasper’s grief drives him to reckless behavior.
03 - Ye Who Enter Here
Written By: Kim Shumway Directed By: Antonio Negret Rating: 0.6 Audience: 1.57 Clarke wrestles with a decision. Bellamy learns that something isn't what it seems. Meanwhile, Murphy plots to betray his former Chancellor.
02 - Wanheda - Part Two
Written By: Aaron Ginsburg & Wade McIntyre Directed By: Mairzee Almas Rating: 0.6 Audience: 1.63 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.
01 - Wanheda - Part One
Written By: Jason Rothenberg Directed By: Dean White Rating: 0.7 Audience: 1.88 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.
16 - Blood Must Have Blood Pt. 2
Written By: Jason Rothenberg Directed By: Dean White Rating: 0.4 Audience: 1.34 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
15 - Blood Must Have Blood Pt. 1
Written By: Aaron Ginsburg & Wade McIntyre Directed By: Omar Madha Rating: 0.5 Audience: 1.49 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.
14 - Bodyguard of Lies
Written By: Kim Shumway Directed By: Uta Briesewitz Rating: 0.5 Audience: 1.55 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
13 - Resurrection
Written By: Bruce Miller Directed By: Dean White Rating: 0.5 Audience: 1.42 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.
12 - Rubicon
Written By: Mairzee Almas Directed By: Aaron Ginsburg & Wade McIntyre Rating: 0.5 Audience: 1.36 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
11 - Coup de Grâce
Written By: Charlie Craig Directed By: P.J. Pesce Rating: 0.5 Audience: 1.51 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
10 - Survival of the Fittest
Written By: Akela Cooper Directed By: Dean White Rating: 0.5 Audience: 1.53 Lives are at risk as Clarke and Lexa encounter a new emeny. Bellamy and Lincoln agree to work together to break into Mount Weather. Murphy helps Jaha confront his past. Meanwhile, Indra makes Octavia an offer she can’t refuse.
09 - Remember Me
Written By: Dorothy Fortenberry Directed By: Omar Madha Rating: 0.5 Audience: 1.48 Clarke strikes a deal with Lexa and Indra. Abby and Kane begin to realize that decision making powers are out of their hands. A seething Raven is unable to control her emotions. A bold move threatens to destroy the newly formed alliance between the sky people and the Grounders, and a familiar face haunts Clarke. Meanwhile, back at Mount Weather, Monty comes up with a risky plan
08 - Spacewalker
Written By: Bruce Miller Directed By: John F. Showalter Rating: 0.5 Audience: 1.40 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
07 - Long Into an Abyss
Written By: James Thorpe Directed By: Antonio Negret Rating: 0.6 Audience: 1.62 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 drop ship, 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.
06 - Fog of War
Written By: Kira Snyder Directed By: Steven Depaul Rating: 0.6 Audience: 1.86 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
05 - Human Trials
Written By: Charlie Craig Directed By: Ed Fraiman Rating: 0.6 Audience: 1.64 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
04 - Many Happy Returns
Written By: Kim Shumway Directed By: P.J. Pesce Rating: 0.5 Audience: 1.75 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 flight. 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
03 - Reapercussions
Written By: Aaron Ginsburg & Wade McIntyre Directed By: Dean White Rating: 0.5 Audience: 1.68 When Clarke discovers a horrifying project being carried out in Mount Weather’s medical ward, she joins forces with an unlikely ally. After Abby 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
02 - Inclement Weather
Written By: Michael Angeli Directed By: John F. Showalter Rating: 0.5 Audience: 1.48 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 to find Lincoln
01 - The 48
Written By: Jason Rothenberg Directed By: Dean White Rating: 0.5 Audience: 1.54 Picking up where the season one finale ended, Clarke is still alone in the white room, frantically trying to make sense of her bizarre surroundings, while the fate of Bellamy, Finn and Raven is still unknown. Lincoln and Octavia’s daring plan is thwarted and an enemy returns. Meanwhile, Abby, Kane and the survivors of the Ark must face physical and moral dilemmas in their dangerous and beautiful new world. Finally, Jaha makes a heroic decision. The second season premiere of The 100 airs Wednesday October 22, 9|8c, on The CW
13 - We Are Grounders - Part 2
Written By: Jason Rothenberg Directed By: Dean White Rating: 0.5 Audience: 1.68 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.
12 - We Are Grounders - Part 1
Written By: Tracy Bellomo & Akela Cooper Directed By: Dean White Rating: 0.6 Audience: 1.58 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
11 - The Calm
Written By: Bruce Miller Directed By: Mairzee Almas Rating: 0.6 Audience: 1.71 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
10 - I Am Become Death
Written By: T.J. Brady & Rasheed Newson Directed By: Omar Madha Rating: 0.5 Audience: 1.46r Murphy returns to camp claiming to have been held captive and tortured by the Grounders, and 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, and Jasper pulls off a heroic move
09 - Unity Day
Written By: Kim Shumway & Kira Snyder Directed By: John Behring Rating: 0.6 Audience: 1.73 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
08 - Day Trip
Written By: Elizabeth Craft & Sarah Fain Directed By: Matt Barber Rating: 0.6 Audience: 1.64 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 Diane Sydney are revealed
07 - Contents Under Pressure
Written By: Akela Cooper & Kira Snyder Directed By: John Showalter Rating: 0.6 Audience: 1.88 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 begins to deal with his guilt over his recent decision
06 - His Sister’s Keeper
Written By: Tracy Bellomo & Dorothy Fortenberry Directed By: Wayne Rose Rating: 0.6 Audience: 1.97 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’s and Octavia’s childhood on the Ark
05 - Twilight's Last Gleaming
Written By: Bruce Miller Directed By: Milan Cheylov Rating: 0.5 Audience: 1.80 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.
04 - Murphy's Law
Written By: T.J. Brady & Rasheed Newson Directed By: PJ Pesce Rating: 0.5 Audience: 1.69 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
03 - Earth Kills
Written By: Elizabeth Craft & Sarah Fain Directed By: Dean White Rating: 0.6 Audience: 1.90 In a desperate attempt to treat Jasper’s festering wounds, Clarke, Finn and Wells set out in search of a seaweed antibiotic. Bellamy and his crew go hunting for food, and are joined by Charlotte, a lovable 13-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 on his betrayal that resulted in her father’s death
02 - Earth Skills
Written By: Jason Rothenberg Directed By: Dean White Rating: 0.7 Audience: 2.27 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 craft an escape pod
01 - Pilot
Written By: Jason Rothenberg Directed By: Bharat Nalluri Rating: 0.9 Audience: 2.73 Ninety-seven years ago, nuclear Armageddon decimated planet Earth, destroying civilization. The only survivors were the 400 inhabitants of 12 international space stations that were in orbit at the time. Three generations have been born in space, the survivors now number 4,000, and resources are running out on their dying “Ark.” Among the 100 young exiles are Clarke, the bright teenage daughter of the Ark’s chief medical officer; the daredevil Finn; the brother/sister duo of Bellamy and Octavia, whose illegal sibling status has always led them to flaunt the rules, the lighthearted Jasper and the resourceful Monty. Technologically blind to what’s happening on the planet below them, the Ark’s leaders — Clarke’s widowed mother, Abby; Chancellor Jaha; and his shadowy second in command, Kane — are faced with difficult decisions about life, death and the continued existence of the human race.