The answers to all the big questions will be finally revealed in the upcoming episode of "Quantico" on ABC.

In an interview with Entertainment Weekly, executive producer Josh Safran revealed that the upcoming episode, titled "Turn," will tie the loose ends in some of the storylines of the series.

"It involves an event at Quantico that changes everybody's trajectory forever," Safran explained. "I kind of think of that as the spot in the season where everything comes together and the place that everyone shoots off of from that episode will line them up tragically or not with where we find them in the future, in the beginning of the season."

According to the synopsis for the episode, Quantico will be under attack of a terror cell that will attempt to infiltrate the training ground for FBI agents. This will endanger the lives of Miranda (Aunjanue Ellis) and Liam (Josh Hopkins), or someone close to them. This means that Alex Parrish (Priyanka Chopra) and her batch of trainees have already encountered a terrorist cell while inside the academy. Will this event lead to a bigger implication regarding the terrorists in a future timeline of the show?

Also, the episode will feature how Nimah and Raina (Yasmine Al Massri) will come to terms with their different agenda in the series. According to Safran, the twins will have to deal with the fact that Raina already wants to be an FBI agent as much as Nimah.

"They're really going to have to learn how to grow together," the showrunner said. "[The next episode] ends the story but then sets it up in a totally new way that we ride out for the rest of the season."

The upcoming episode will also show that Alex will still have to follow the orders of the terrorists in a future timeline of the show. However, the one who will be in danger this time will be Caleb's (Graham Rogers) mom, U.S. senator Claire Haas (Marcia Cross).

"Quantico" episode 15 airs Sunday, March 27, on ABC.