Nevermore is the eleventh episode of the third season of The 100. It is the fortieth episode of the series overall.
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.
Jasper and Clarke are driving away from Arkadia and Jasper says that Clarke didn't deserve saving. They meet up with Octavia, Bellamy and the others. Raven awakes and tells A.L.I.E. she sees A.L.I.E. 2. She gets Raven to try and find out where she is but Raven is sedated before she can.
Clarke remembers that Niylah had a wristband so they go and find her. Niylah is hostile towards them and says that she won't let them in as the Sky People killed her father. Bellamy holds a gun to her and she is forced to let them in. Raven is tied to the bed although she struggles and fights back. Clarke explains to Niylah that they had no choice. Niylah remains angry but Clarke says that Niylah can't let an innocent girl suffer.
They find the wristband and Sinclair explains that Raven was building an EMP which wouldn't harm the human body but destroy the chip. But they would need an electromagnet and Monty and Octavia set off to the dropship to find one.
Raven awakes and she is guarded by Jasper. A.L.I.E. tells Raven to escape and loosen her bonds by dislocating her shoulder. Jasper calls for Bellamy and the others and Raven growls to be let go. A.L.I.E. asks for the chip via Clarke and Raven says that if she lets Raven die she will never get A.L.I.E. 2. Raven calms down and lets Clarke bandage her. Clarke tells the others that she will take first watch and Jasper gets annoyed saying he doesn't take orders from her. Bellamy tries to calm Jasper down but Jasper is still angry at Clarke about Maya and says that at least Raven is worth saving. Bellamy tells Jasper that he shouldn't let his anger get in the way but Jasper says that when Bellamy is angry, people die and says just ask that girl (Niylah) over there.
Clarke is bandaging Raven's arms and Raven calmly thanks her. A.L.I.E. through Raven asks Clarke if she ever sees the faces of the people she has killed. Although Clarke ignores it at first, Raven begins reminding her of the deaths of Wells, Finn, Jake Griffin and Lexa, claiming their deaths are her fault. Raven bites Clarke angering her. In her rage, Clarke tells A.L.I.E. that she is going to fry her, accidentally revealing that they plan to use an EMP. A.L.I.E. says she will send somebody to the dropship as that is where there will be an electromagnet.
At the dropship, Octavia and Monty pull up to the dropship. Octavia is upset as she doesn't feel she belongs anywhere as Lincoln was her people. Monty reminds that she is still part of the 100. At Niylah's, Clarke apologizes to Jasper about Maya but Jasper won't accept her apology. At the dropship, Monty hears a noise and Hannah appears. Monty asks her why she turned him in and Hannah appears shocked, claiming she would never do that. Monty asks her what his dad's favorite color was and Hannah doesn't know as she is chipped. A.L.I.E. says they need him to lead them to the others and Hannah attempts to force Monty to take the key. Octavia arrives and attempts to stop Hannah but she pins down Octavia and tries to kill her. Monty is forced to shoot his mother.
Back at Niylah's, Bellamy and Jasper are watching Raven. She begins to make fun of Jasper and calls him a waste of space and mockingly claims that everybody should protect him. Bellamy sends Jasper out and Raven begins to talk to Bellamy about how he is not a leader. Clarke has only been back a day already Bellamy is taking orders. She says that it's a shame he was never very devoted to Gina but says that at least he avenged her by murdering the army of grounders. Niylah overhears and despite Clarke telling her not to, Niylah runs in and yells at Bellamy as she knows he was one of the people responsible for her father's death. Clarke gets her out but it is too late as A.L.I.E. knows where they are. Bellamy apologizes to Niylah but Niylah says that people like him always are.
Monty and Octavia arrive and Sinclair helps set up the EMP device. A drone appears but Bellamy shoots it down and they use the battery for the EMP. A.L.I.E. attempts to make Raven commit suicide but they stop her and hold her down. As the device is being set up, Raven pleads to Sinclair not to use it as it will give her brain damage but the group uses it anyway. After using the device, Raven slumps and is unconscious.
Jasper picks up the chip and says he will destroy it. Clarke tries to stop and cries, saying it's Lexa in the flame. Clarke then realizes that she has seen Titus extract an AI before and realizes the key could be extracted in the same way. She cuts open the back of Raven's neck and the AI is taken out. Raven then awakes and is hurt by the cut showing she is un-chipped, much to everyone's happiness.
Monty is upset that he could have saved his mom and when Jasper attempts to comfort him, he rejects him. Octavia gives Niylah a lantern as thanks and Clarke convinces her to go otherwise she will be chipped as well. Outside, Bellamy is upset over the massacre and asks Clarke what to do when you realize you might not be the good guy. Clarke repeats Abby's words that maybe there are no good guys. Raven explains that A.L.I.E. 2 is the only way for A.L.I.E. to be stopped and the group leave.
In the City of Light, Jaha and A.L.I.E. says that they know the second AI can stop her. She says they have to kill them all.
This episode marks the first time Monty Green directly kills someone.
The episode title is likely a reference to Edgar Allan Poe's poem "The Raven" in which a raven repeats the word "Nevermore". This episode is centered around the character Raven breaking free of A.L.I.E.'s control.
Lindsey Morgan won the TVLines Performer of the Week award for her performance in the episode.