Olivia's team try to resolve a security breach. Meanwhile, Fitz contemplates ignoring Olivia's advice when his reelection campaign loses momentum; and Adnan and Maya strategize about how to proceed.
Abby steps in as Olivia's proxy and takes on duties at the White House. Meanwhile, the team continues to investigate B613, and someone throws a wrench in Reston's presidential campaign.
James orders Michael and Sonya to kill one of Michael's old friends, Steele. Michael tries to find a way to save him. Meanwhile, Carlos is targeted and kidnapped by a gang member, Nando. And to save Carlos, Fiona asks help from Michael and Sonya.moreless
In the first part of a two-part season finale, the BAU encounters a gang of bank-robbing serial killers in the nation's capital. As the team tries to negotiate the situation that is unfolding inside the bank, one of the team is taken hostage.moreless
In the conclusion of a two-part season finale, the BAU continues to pursue the bank-robbing serial killers and the team determines the suspects have a bigger target. Due to the hostage situation, they must work quickly to diffuse an explosive situation. Meanwhile, a team member is married as Prentiss ponders her future with the BAU.moreless
Eddie and Rosalee harbor an overseas visitor and murder suspect... and Nick finds out about it.
Carrie and Al are confused when a murder victim suddenly appears in an empty ballpark, and determining cause of death.
Elena is uneasy and confused after Rebekah tells her why the night of the Homecoming dance is so significant. Tyler's actions during the evening leave Matt and Caroline shaken. Things turn bizarre when Klaus decides to activate his latest plan and, while trying to outsmart him, Damon forms a risky liaison which gives rise to a horrifying unforeseen development.moreless
Elena and Bonnie help Alaric in his effort to decipher the meaning behind his recent discovery. Elena and Rebekah find themselves in a mean-girl power struggle until Rebekah finally reveals some of her family's ancient secrets and her violent past with Klaus and Elijah. Still trying to make a breakthrough with Stefan, Damon tries a reckless new approach, and they're both surprised by an unlikely ally.moreless
On the first day of their senior year, Elena, Matt, Bonnie, and Caroline are still dealing with the recent events, yet Tyler seems to be enjoying his new reality a little too much. Damon is frustrated by the new guest in his house, and everyone is caught off guard when a new student joins Alaric's history class. Matt looks to Bonnie for help after realizing that he made a big mistake. Meanwhile, Stefan continues to follow Klaus's orders and carry out his latest assignment.moreless
Elena, Bonnie, Matt and Tyler decide to oblige Caroline when she urges them to celebrate Senior Prank Night, but uninvited guests make for a deadly evening. Damon convinces Jeremy that his connection to the other side may be the way to defeat Klaus. Klaus uses Stefan for more dangerous and brutal intentions.moreless
While in Chicago with Klaus, Stefan runs into a vampire from his past, someone still interested in him after decades. In a flashback to 1920s Chicago, Stefan recalls a troubling chapter in his life. Following a tip, Damon and Elena follow the trail of Stefan and Klaus. Wondering what's happened to Caroline, Tyler asks Sheriff Forbes for help.moreless
When Emily Prentiss confronts her nemesis, Ian Doyle, and goes missing, Jennifer "JJ" Jareau is asked by the BAU to help find Prentiss and capture Doyle before it is too late.
While Peter and a local sheriff investigate murders tied to Newton, Walter is worried that he'll be sent back to St. Claire's, and someone new arrives from the other Earth.