AJ Cook, who plays Jennifer Jareau in Criminal Minds, spoke about the upcoming episode, titled Forever People, in a recent interview.

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Cook spoke with Buddy TV about the episode which will focus on her, as JJ's post traumatic stress disorder caused by her abduction in the past will act up.

"This is what has her in the predicament she is in 'The Forever People.' It just so happens that the anniversary is coming up, and that's a lot of the times what pushes people over the edge to break and to snap. She's not been dealing with it," she said. "She's been suppressing it and just pushing it down and pushing it down, as you do, as a working mom and just as a busy individual. You don't have time to deal with it. You don't want to acknowledge it because if you don't acknowledge it, maybe it's not really there. Unfortunately, when you've been through something as traumatic as her, that's only going to fly for so long. I think it's great. I'm impressed that she's even held it together this long. It's nice to see that she's not superhuman, you know? It's nice to see that she has real emotions and that she has to deal with things like everyone else and has to face her demons."

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The actress went on to reveal that Dr. Reid (Matthew Gray Gubler) will step up as the man of the hour and will be of great support through this traumatic period, adding that fans will get to witness their "incredible relationship" again.

"So, in this episode, in particular, it's been really, really nice because Spencer, Dr. Reid, is the one that kind of calls her on it. We kind of get to see their incredible relationship again," she said. "We haven't seen it in a really long time, but these two are best friends and they really care for one another and they love each other and you really feel that, you really feel their connection and the want from Dr. Reid to help JJ so badly, and you really feel the desperation from JJ looking at Dr. Reid, just sort of pleading, 'Help me, what is - I don't know what's going on here.' We have a lot of really great scenes, just really sincere scenes that I think the audience will respond to and they were so much fun - I don't know if fun's the right word - but very emotional to shoot. Yeah, it's a heavy one, for sure."

Watch a sneak peek of The Forever People here: