Shumway secretly orders one of the 100 to kill Bellamy. Meanwhile, hallucinogenic nuts provide Octavia with an opportunity to help the Grounder escape the camp, and Bellamy and Clarke investigate…

Finn arranges a meeting with Clarke and the leader of the Grounders in order to bring peace, however a sceptical Clarke warns Bellamy, who along with Jasper and Raven follow…

Murphy returns to the camp carrying a horrific virus created by the Grounders to weaken the camp. After learning the Grounders plan to attack the next day, Bellamy, Finn and…

Clarke and Finn are captured by Anya, who forces them to save the life of a victim of the explosion. Meanwhile, Raven deals with her split from Finn, and Kane…

Clarke and Finn come face to face with a new enemy after Lincoln rescues them from Anya, while Bellamy, Raven, Octavia and Jasper deal with a vengeful Murphy. On the…

As the remaining members of the 100 face off against the Grounders, Jaha makes a noble sacrifice to ensure the Ark makes it to Earth.

A plan to contact the Ark is put in motion after Raven crash lands on Earth. Meanwhile, Abby exposes Kane’s plan to reduce the population of the Ark.

Bellamy, Finn and Jasper head into Grounder territory to search for Octavia, as flashbacks show the siblings’ difficult childhood on the Ark. Meanwhile, Raven finds out about Clarke and Finn.

97 years after a nuclear war, human kind is living in space. 100 juvenile delinquents are sent down to Earth to see if the planet is habitable.

Discovering that Jasper may still be alive, Clarke, Bellamy, Finn, Wells and Murphy head out to find him. On the Ark, Abby is determined to prove Earth is habitable, and…

As a dangerous, acidic fog approaches, Clarke, Finn and Wells set out in search of a seaweed-like plant to make an antibiotic poultice for Jasper’s wounds, while a vulnerable young…

Bellamy, Clarke and Finn try to protect Charlotte when everyone learns she killed Wells. On the Ark, Abby risks getting floated in order to give Raven the chance to launch…

When Gus tries to right a wrong, Malvo embraces his alter ego. Lester finds himself in a surprising situation, and Molly uncovers a promising lead.

When Lester has a close call, Molly makes an unorthodox decision. Gus weighs some neighborly advice, and Malvo gets what he wants.

Malvo executes his master plan, while Lester attempts to craft one of his own. Gus and Molly team up in Duluth.

Malvo seeks answers, while Lester finagles a few of his own. Molly and Gus try to get past a setback in the investigation.

Molly faces pressure to close the case, while Lester starts to feel like a new man.

Lester has an unexpected encounter, Malvo changes course, and a new investigation leads Molly down a familiar path.

Molly takes the lead, while Gus pursues a hunch. Lester manipulates a situation, and Malvo finds a new target.

A meek, mild insurance salesman meets a rootless, manipulative stranger in the hospital, which initiates terrible and gruesome events that will change the salesman’s life forever.

Molly begins to suspect that Lester is involved with the murders, but her new boss points her in a different direction. Meanwhile, Malvo investigates the blackmail plot against a man…

Malvo flips the script on the blackmail operation, Molly sets a trap, and Gus debates whether he should come clean. Lester’s return to work has complicated repercussions.

Cordelia’s latest vision puts the coven’s future in question; the girls manifest powerful new gifts; Queenie’s search for Marie Laveau leads her to hell and back.

A new Supreme rises.

Fiona attempts to out the new supreme with a visit from Stevie Nicks; Cordelia learns the truth about Hank and the witch hunters; Madison tries to eliminate her competition for…

Fiona and Laveau have a deadly face off with The Corporation; Cordelia makes a desperate sacrifice.

Riley and Gabriel are shocked when the identities of sleeper agents embedded in the U.S. government are revealed.

A Center for Disease Control medical team’s investigation of a disease outbreak at a high tech arctic research lab uncovers the truth about a secretive research project that could threaten…

As Dr. Alan Farragut accelerates the hunt for his infected brother Peter, the quarantine of three scientists threatens to create panic at the lab. Doreen finds evidence that Dr. Hatake…

As Alan sets up an isolation unit to quarantine the infected lab workers, Walker and Jordan each face the possibility that they have the deadly virus, too.

As Alan risks killing Peter in a desperate effort to cure him, Walker teams with a mysterious young researcher to survive their quarantine. Jordan discovers her Rapid Response test is…

As Alan’s controversial cure leaves Peter clinging to life, the unchecked virus forces Jordan to make a devastating decision. Walker discovers the surprising truth about her new ally, while Daniel…

After Daniel leaves Balleseros to die, the mystery surrounding his connection to Hatake is revealed. As he works to save Peter, Alan struggles with his feelings for both Walker and…

As Ilaria CEO Constance Sutton arrives to collect the virus and its cure, Alan finds Walker seemingly symptom-free. Daniel learns the truth about his “adoption” by Hatake.

Alan risks his life to save his brother Peter from Ilaria CEO Constance Sutton, only to see him re-captured by Vectors. Julia Walker deals with the mystery of her “cure”…

The CDC teams learns the real purpose of the infection and Alan and Julie make a perilous journey to retrieve the canister that has the original source virus.

In a last ditch effort to find help and a cure, Alan and Julia go to an abandoned satellite station discover a shocking secret that reveals Hatake’s ultimate goal and…

The Vectors start working together to hunt down the uninfected as the CDC develops a risky cure and a band of assassins from Ilaria secretly infiltrate the base.

The uninfected are hiding in a secret bunker on the base as the CDC attempt to retrieve the canisters with the virus and the cure while the Ilaria assassins capture…

Alan and Peter capture the assassin Scythe and demand to know the whereabouts of Julia’s mother. Balleseros confronts Hatake about the missing Inuit children, while Anana and her brother learn…