Pilot

Pilot is the first episode of season one of The 100, and the series' first episode overall. It premiered on March 19, 2014. It attracted 2.73 million viewers on the original airing.

Summary
Set in an indeterminate year in the distant future, 97 years after a nuclear war has devastated the surface of Earth, the only survivors were approximately 400 inhabitants of 12 national space stations that were in orbit at the time.

100 juveniles convicted of various crimes are sent to Earth to see if it is survivable. Among them is 17-year-old Clarke Griffin, the daughter of the Ark's chief medical officer and chief engineer; Wells Jaha, the son of the Chancellor Jaha; the daredevil, Finn Collins; the illegal sister, Octavia Blake and her stowaway brother, Bellamy Blake; the lighthearted Jasper Jordan and the resourceful Monty Green.

On Earth, the 100 discover Earth is in fact livable. When Clarke soon realizes they have landed on the wrong mountain and a radiation soaked forest sits between the 100 and their next meal, Clarke gathers a small group to head for Mount Weather for food and supplies. Clarke and the group quickly discover Earth is filled with wonders and dangers of all sorts. Meanwhile the rest of the 100 stay near the landing site, and one of the own makes plans to ensure the Ark believes the 100 to be dead.

Back on the Ark, Chancellor Jaha, has been shot, leaving Abigail Griffin to try and save his life at all costs. Meanwhile with the Chancellor dying, his second in command Councilman Kane, takes charge. Councilman Kane is a man who does not believe in mercy in a place where all law breaking is a capital crime.

Starring

 * Eliza Taylor as Clarke Griffin
 * Paige Turco as Abigail Griffin
 * Thomas McDonell as Finn Collins
 * Eli Goree as Wells Jaha
 * Marie Avgeropoulos as Octavia Blake
 * Bob Morley as Bellamy Blake
 * Kelly Hu as Callie Cartwig
 * Christopher Larkin as Monty Green
 * Devon Bostick as Jasper Jordan
 * Isaiah Washington as Thelonious Jaha
 * Henry Ian Cusick as Marcus Kane

Guest Starring

 * Terry Chen as Shumway
 * Richard Harmon as John Murphy
 * Sachin Sahel as Jackson
 * Alessandro Juliani as Sinclair

Quotes
Abby (To Clarke): "Earth, Clarke. You get to go to Earth."

Finn (To Clarke): "Hey, you’re the traitor who’s been in solitary for a year."

Octavia: “We’re back bitches!”

Jasper (To Clarke): “They got a bar in this town? I’ll buy you a beer.”

Bellamy (To Wells and Clarke): "I got a better idea. You two go, find it for us. Let the privileged do the hard work for a change."

Bellamy (To Wells and The 100): "Here, we do whatever the hell we want whenever the hell we want."

Clarke: "We’re not alone."

Notes and Trivia

 * Excluding Wells, Finn is the first delinquent Clarke meets.
 * Clarke knew Wells since they were young children.
 * It is never mentioned in the episode what Wells did to get arrested.
 * It was revealed at Comic Con 2014, Wells was arrested for damaging the last tree.
 * In the books, Wells set fire to a tree in order to get locked up. He also sped up the expedition to Earth by tampering with the oxygen in the ship’s airlock.
 * Jasper calls Finn the "Spacewalk bandit".
 * Finn was arrested for an illegal spacewalk.
 * Finn said he did it because it was fun.
 * Jasper Jordan and Monty Green were arrested for stealing herbs to make "stuff".
 * Clarke's been in solitary confinement for one year.
 * Eliza Taylor is left-handed thus making Clarke left-handed.
 * While marking the map to Mount Weather, Clarke uses her left hand.
 * Finn gives Clarke the nickname "Princess".
 * In the books, Bellamy gives her this nickname.
 * Octavia gives Finn the nickname "Spacewalker".
 * Murphy calls Wells the "Chancellor of Earth".
 * Jasper’s shirt had “Earth Day 2052" printed on it.
 * Octavia is the first delinquent attacked by an animal.
 * Octavia is bitten in the thigh by a sea serpent.
 * Jasper is the first delinquent attacked by a Grounder.
 * Jasper is speared in the chest.
 * Octavia is Bellamy`s little sister

Body Count

 * Glen Dickson is killed in the descent to Earth.
 * An unnamed delinquent is also killed in the descent to Earth.
 * On the Ark, due to the removal of the bracelets, they think more delinquents are dead.
 * Jasper is speared and assumed dead.

Behind the Scenes

 * The Mount Weather featured in the show is based on the real Mount Weather Emergency Operations Center.
 * When the Exodus ship left The Ark headed for Earth and it made a noise of flying at fast speeds. This is impossible because there is no sound in space.
 * Before Devon Bostick hit the water he was already wet.
 * Devon Bostick confirmed on Twitter his character Jasper was supposed to die in this episode.
 * The cast and crew liked Devon so much, Jasper's fate was changed.

Production Notes

 * The episode was originally scheduled to air in January.
 * Pilot was watched by 2.73 million viewers and had a ratings/share of 0.9/3 in the key 18-49 demographic
 * This is the highest rated midseason premiere for CW since Life Unexpeceted in 2010. It also built upon it’s lead-in, Arrow, by 13% in both total viewers and in ages 18–49.