J. Mallory McCree

Alex receives information about her father and his past at the FBI, and the recruits learn the art of profiling.

FBI computers are hacked, revealing confidential files that make Alex believe a second bomb is somewhere in New York. Meanwhile, the recruits receive individual assignments that turn out to be connected.

The NATs practise surveillance with Miranda and her troubled son. Shelby tries to keep Caleb at arm's length, while Raina allows Simon closer. Alex gets help when she tries to hack an FBI computer.

More questions arise when the Grand Central Station bombers are revealed. Back at Quantico, the recruits receive time off for the holidays.

Alex finds herself in the middle of a congressional hearing to testify about the terrorist bombings. Convinced Elias didn't act alone, she is determined to find answers.

A terror cell tries to infiltrate Quantico, forcing Miranda and Liam to pay a deadly price. Meanwhile, in the future, Alex continues to get instructions from the terrorist — only this time, it's Claire Haas' life that hangs in the balance.