At Quantico, Alex finally receives information about her father and his FBI past, but in the future it’s her mother, Sita, who plays a key role when Liam convinces her to participate in a press conference on national television begging Alex to turn herself in. Also at “Quantico,” the NATS learn the art of profiling and focus on their classmates’ strengths and weaknesses, ultimately challenging their confidence and comradery.

At Quantico, the recruits are tasked with performing a hostage rescue training exercise that shakes Alex, making her question her ability and whether she should quit Quantico. While in the future, Alex continues to search for clues, finding one that questions the innocence of one of her closest classmates. But is her clue really what she thinks? No one is who they seem.

The NATs learn surveillance by putting it into practice with Miranda and her troubled son, Charlie. Shelby tries to keep Caleb at a distance, but Raina opens the door to a closer relationship with Simon. In the future, Alex is helped when she tries to hack into an FBI computer.

It’s midterm exam time at Quantico where the NATS are given an explosive assignment which results in some people going home for good. In the future, Alex continues to try and clear her name, finding Nimah and Raina who provide more questions than answers leaving Alex and the world to wonder, “who can you really trust?”

In the future, the FBI computer system is hacked and confidential files go public leading Alex to the conclusion that a second bomb is in play somewhere in NYC. Back at Quantico, the recruits are given individual assignments only to realize they are all connected as part of a lesson to look at the bigger picture.

At Quantico, the NATS attend a class with guest speaker Dr. Susan Langdon. Dr. Langdon is a former agent and profiler who tasks the trainees with looking at serial killer cases to find the one victim that doesn’t fit the case, but when Simon becomes too good at finding things that don’t belong, it’s his life that becomes endangered. In the future, Alex is interrogated by a highly sophisticated FBI team while Ryan’s life hangs in the balance

The terrorists responsible for the bombing of Grand Central Station finally reveal themselves, but instead of answers, more questions remain. While back at Quantico, the recruits receive a well-deserved few days off for the holidays, but not everyone is oh so merry when secrets are revealed and lines and blurred.

At Quantico, the NATs look into each other’s background to determine who gets high-level security clearance, and in the process Alex, Shelby and Iris learn some surprising truths about Drew, Will and Caleb. Meanwhile, in the future, Alex contacts Claire Haas (guest star Marcia Cross) in order to find her missing friends and is shocked when she discovers what happened to Cale.

It’s career day at Quantico as the NATS meet representatives from various FBI branches to help them decide their future paths. In the future, Alex continues to search for the terrorist, and in the process, discovers some familiar faces – including one who knows the terrorist’s endgame.

The NATS are excited that graduation is near as they prepare to leave Quantico and head out into the real world for their new assignments. In the future, Alex learns someone she cared about at Quantico is not who they seemed to be, as she finds herself at the heart of another possible attack.

It’s graduation day for the NATS of Quantico, while, in the future, Alex and her team find themselves head-to-head with the terrorist.