Just when it seemed like Alex (Priyanka Chopra) had found an ally in Simon (TateEllington) on Quantico last week, he took a call from his boss at the good ol' FBI. So is he totally playing Alex to bring her in for the terrorist attack?

Simon will spend the bulk of Sunday's episode ostensibly helping Alex narrow down the true culprit, and his true allegiance and intentions will be made very clear by the end of the episode. Less apparent is who is behind the attack, as during their recon work, they find evidence against another trainee we have not seen in the future... until now.

Do you think Simon's on Alex's side? Who is the new suspect?

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