Kane attempts to make peace with the Grounders, an emergency causes Jasper to enter a risky medical procedure, and the search for Clarke leads Finn to some violent actions.
Clarke is betrayed by someone she trusted. Meanwhile, Bellamy, Finn and Murphy (Richard Harmon) race to save a stranger; and tensions rise between Raven and Wick (Steve Talley).
Clarke confronts Dante Wallace (Raymond J. Barry). Meanwhile, Kane interrogates one of the 100; and Abby performs emergency surgery.
An enemy returns in the Season 2 premiere. Later, Jaha makes a heroic decision.
In the season finale, Jack discovers the alarming depth and scope of the organization to which he's lost Amy. Meanwhile, Marcus and Madison engage in a fatal struggle; and Richard is forced to go on the run, but he recruits an unexpected partner along the way.moreless
After losing nearly all food supplies through a fire, the remaining "100" are forced to go hunting despite the constant threat of the Grounders. Clarke and Finn are caught up in the aftermath of bombing the bridge and may have to pay a high price ... Meanwhile on the Ark: Councillor Kane goes to great lengths to find and save survivors in the repercussion of major destruction.
Clarke and Finn grow closer as they try to communicate with the Ark. Meanwhile, Bellamy maintains order within the group.
An antibiotic is sought to treat Jasper's wounds. Meanwhile, Bellamy and his crew hunt for food.
A search-and-rescue mission ends in surprise. Meanwhile, Raven helps Abby craft an escape pod.
100 young criminals that have been living in space on The Arch have been sent to Earth to test if it has become inhabitable after 97 years of being abandoned after a nuclear war.moreless
While Norma worries about the future of the motel, Norman is fixated on the death of Miss Watson and Bradley gets desperate in her search for her father's killer.
Twist after twist keeps you guessing as you try to determine the true alliance of Kellog. Meanwhile Alec is forced to make a tough decision between a loved one and Kiera while the mysterious Freelancers agenda starts to become clear.moreless
Chaos breaks out in Vancouver when a series of cyber attacks turn the city upside down. Kiera and Carlos race to find the perpetrator while clues suggest Alec's own technology has something to do with it.moreless
After a surprise attack by the Freelancers, Kiera is captured by Julian’s followers. Alec reactivates Travis' military chip in order to hunt him, but the hunter soon becomes the hunted.
Alec’s mother is shot by a bullet meant for Julian while Dillon’s new Liber8 task force is put to the test when Kiera must decide how far she will go to stop Julian's murderous future.moreless
Kiera and Carlos discover that a juror on Julian's trial has been compromised and must race to protect his family from a Liber8 plot. Alec is torn between telling the truth at his brother's trial or protecting his mother. Emily reveals she is more than just a pretty face.moreless
Norman takes Emma to the dance and gets a lift home with Miss Watson. Meanwhile, Romero decides it is time for action.
Kiera asks for Alec's help when a dangerous drug from the future makes its way onto the streets. Jason warns Kiera about freelancers from the future. Meanwhile, Travis and Sonya fight against each other.moreless
Kiera and Carlos's reunion is a bumpy one as they attempt to thwart Liber8's brazen hijacking of a prison transfer. Meanwhile, Kellog approaches Alec with an enticing partnership proposition.
When the mayor is assassinated, Kiera and Carlos join forces once again to try and solve the case. Kiera also reaches out to Alec but he hasn't been the same since reading the message from his future self.moreless
Jimmy handles the aftermath of the fire-bombing, while Alec attempts to get back in his good books. Meanwhile, Mitch helps Grace look into Jimmy's crew and Max makes a deal with the Chinese.moreless
When Jimmy Laszlo discovers money missing, Grace manages to convince him he has a traitor in his organisation. Meanwhile, Grace turns to Tom for comfort and Mitch has serious doubts about helping her.moreless