Bellamy and Kane lead a team into Grounder territory to rescue Clarke, who has bounty on her head; Murphy finds a changed Jaha is on a different mission.
Bellamy and Kane put their lives on the line to rescue Clarke; Abby considers opening Mount Weather as a medical facility; Murphy schemes against Jaha.
Clarke struggles with a decision; Bellamy finds that something is not what it seems; Murphy plans to betray his former chancellor.
Clarke learns the identity of the author of a devious plan; Kane fights to keep the peace; Jasper acts recklessly out of grief.
A new threat dashes Clarke's hope for peace; Raven is targeted; Murphy (Richard Harmon) orchestrates a dangerous con.
Clarke is torn between mercy and vengeance; Kane and Octavia work together in hopes of averting a disaster; Abby worries about Raven.
Lexa tries to maintain peace within the clans; Clarke discovers an unusual and game-changing truth; flashbacks reveal a dark chapter of humanity's past.
Kane's attempt to handle things peacefully may have to give way to more drastic measures; Pike suspects that someone in Arkadia is leaking information; Raven confides in Jasper for help with a plan.
Clarke makes a shocking discovery, and Octavia must make a decision that could lead to devastating consequences.
Jaha uses a terrible method to get Abby to join his cause; Bellamy learns a difficult truth; Monty is in a dangerous spot; Jasper hurries to save his own life.
Alie draws out Raven's dark side; Jasper's frustration grows; Olivia struggles to know her place in the world; Monty must make a snap decision.
Jaha makes his way back to Polis; a surprise encounter awaits Murphy; Octavia discovers a clue.
Clarke is on a mission that might change everything; Murphy gets an idea that may help ensure his survival; Kane reaches his breaking point.
Clarke, Bellamy, Jasper and Octavia face a disastrous roadblock; Monty and Raven discover something of great importance.
Clarke finds hope in a place she never expected; Alie's (Erica Cerra) master plan begins to coalesce.