Here's some scoop on Quantico from Entertainment Weekly's Natalie Abrams' The Spoiler Room column, which was posted on 10/2/15.
Who do you think is the terrorist on Quantico? — Teri
Honestly, it’s way too early for me to even venture a guess since we still have plenty of NATs — new agent trainees — to meet. “The truth of the matter is they’re all suspects,” says EP Josh Safran. “It’s important to note that you’ll meet other NATs as the season progresses. We look at it much like Lost in that you’re meeting new people from different rows of the plane as the series progresses, so you’re meeting new trainees, and the trainees are just as much suspects as anyone you meet in the pilot.” I’d keep my eye on Brandon Fletcher (Jacob Artist), who’ll make his debut in episode 5.
Link to the full article:Spoiler Room: Scoop on 'Arrow,' 'Quantico,' 'Good Wife' and more | EW.com