Season Four

Season Four is the fourth season of the CW television series The 100. It consists of 13 episodes, and premiered on February 1, 2017. It was announced on March 11, 2016. Shooting began on August 2, 2016, and ended January 16, 2017.

Synopsis
For three seasons, The 100 have fought to survive. That fight has torn them apart, turned them against each other, and taken the lives of their closest friends.

In season three, our heroes found themselves at the epicenters of both the Grounder world and the struggle for Arkadia's soul. Despite their best efforts, all out war appeared unavoidable until a new, even more dangerous threat, one that had been quietly rising all along, exploded to the surface: ALIE, the A.I. that ended the world, offered relief from pain and eternal life in the "City of Light," but as her ranks grew, it quickly became clear that she was building an army dedicated to controlling all sentient life on Earth. This was no longer a battle between warring factions; it was a fight for humanity itself.

Now, in the wake of the epic season three finale, a hard truth lands on the shoulders of those who remain. What's left to fight for now? Will they go quietly into the night, or will they find hope and faith in each other, as they face their darkest chapter yet?

Starring
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 * Eliza Taylor as Clarke Griffin
 * Paige Turco as Abigail Griffin
 * Bob Morley as Bellamy Blake
 * Marie Avgeropoulos as Octavia Blake
 * Devon Bostick as Jasper Jordan
 * Christopher Larkin as Monty Green
 * Lindsey Morgan as Raven Reyes
 * Richard Harmon as John Murphy
 * Zach McGowan as Roan (3x01 - 3x10)
 * Isaiah Washington as Thelonious Jaha
 * Henry Ian Cusick as Marcus Kane

Guest Starring
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 * Erica Cerra as A.L.I.E. and Becca
 * Adina Porter as Indra
 * Sachin Sahel as Eric Jackson
 * Jarod Joseph as Nathan Miller
 * Chelsey Reist as Harper McIntyre
 * Luisa D'Oliveira as Emori
 * Tasya Teles as Echo
 * Jonathan Whitesell as Bryan
 * Ty Olsson as Nyko
 * Jessica Harmon as Niylah
 * Bradley Stryker as Rock Line Thief (credited as "Baylis")
 * John Pyper-Ferguson as Bill Cadogan
 * Chai Hansen as Ilian
 * Tati Gabrielle as Gaia
 * Nadia Hilker as Luna

Co-Starring
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 * Diana Pavlovská as Rock Line Ambassador
 * Jarett John as Seiku
 * Jojo Ahenkorah as Costa
 * Jana Mitsoula as Willa
 * Kyle Toy as Ilian's brother
 * Darcy Laurie as Tybe
 * Jennifer Cheon as Dakiva
 * Jason Beaudoin as Rafel
 * Ben Sullivan as Riley
 * Chris Shields as David Miller
 * David Attar as Terro
 * Zoe Wiesenthal as Adria
 * Alex Pangburn as Hayes
 * Brad Bergeron as Stevens
 * Will McDonald as Wilson
 * Joseph John Coleman as Taggart
 * Melinda Michael as Ankara
 * Cole Vigue as Hardy

Episodes
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 * 1) Echoes (T)
 * 2) Heavy Lies the Crown (T)
 * 3) The Four Horsemen (T)
 * 4) A Lie Guarded (T)
 * 5) The Tinder Box (T)
 * 6) We Will Rise (T)
 * 7) Gimme Shelter (T)
 * 8) God Complex (T)
 * 9) DNR (T)
 * 10) Die All, Die Merrily (T)
 * 11) The Other Side (T)
 * 12) The Chosen (T)
 * 13) Praimfaya (T)

Body Count
Note: The total body count for the season cannot be determined. The following information is only what has been confirmed. For a more accurate and specific representation of the season's body count, see the Body Count article.

Pictures

 * -|Countdown=

Comic Con 2016
The 100 appeared in a panel in Comic-Con 2016. The following people were in attendance:
 * Jason Rothenberg
 * Eliza Taylor
 * Marie Avgeropoulos
 * Lindsey Morgan
 * Henry Ian Cusick
 * Richard Harmon
 * Christopher Larkin

Notes and Trivia

 * The season was announced on March 11, 2016.
 * The writers started working on Season Four on May 19, 2016.
 * Production started shooting on August 2, 2016. and wrapped January 16, 2017.
 * The season will be shorter than seasons 2 and 3, with only 13 episodes like the first.
 * Henry Ian Cusick will direct an episode this season.
 * The story will pick up right where season three ended, with half of the Sky People at Polis and half at Arkadia.
 * Zach McGowan (Roan) has been promoted to series regular.
 * At SDCC, Jason Rothenberg teased that there will be two new recurring characters.
 * The season's tagline, "from the ashes we will rise", was first mentioned in "The Four Horsemen".
 * This is the only season that does not include a two-part episode.