Frank is put in danger when his dinner companion, mob lawyer Angelo Gallo, is shot and Danny is a juror in a murder trial.
Alex receives information about her father and his past at the FBI and the recruits learn the art of profiling.
Leanne must decide whether to save a policeman, who helped her during her family's accident, or his shooter.
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.
FBI computers are hacked, revealing confidential files that make Alex think a second bomb is somewhere in New York; the recruits receive individual assignments that turn out to be connected.