Here's some scoop on Quantico from Entertainment Weekly's Natalie Abrams' The Spoiler Room column, which was posted on 4/7/17.
You’ve told us before that Caleb will be back on Quantico, but it’s been three episodes and he’s still nowhere to be seen. When will he reenter the picture? — Charles
You’ll see him in Monday night’s episode — or rather, you’ll see one of our leads reach out to him, definitively bringing him into the loop. (You can probably guess which one.) After that, everyone’s favorite Haas brother — or maybe not, depending on how much you’ve warmed up to Clay — “begins his arc with us in the next few weeks,” says showrunner Josh Safran. Trust me: It’s an arc that’s sure to shake things up in the task force.
Link to the full article:Spoiler Room: Scoop on 'Arrow,' 'Blacklist,' 'Scandal' and more