J. Mallory McCree

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

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.

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.

Carrie and Franny return to the United States; Dar and Saul debrief the president-elect; Quinn struggles with new circumstances.

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.