Spoiler Room: Scoop on Grey's, Glee, Orphan Black and plus 

'Scandal,' 'Flash,' 'Hawaii Five-0,' more fresh TV spoilers

'Bones,' 'Once Upon a Time,' more TV spoilers

'How to Get Away With Murder,' more fresh TV spoilers

Welcome to the Spoiler Room, a safe place for spoiler addicts to come on a weekly basis to learn what’s coming next on their favorite shows and, hopefully, get a few of their own questions answered. If you want scoop on a specific show, send your questions to spoilerroom@ew.com.

How about just Meredith? An upcoming episode will feature all hands on deck in the ER after a plane crashes in Seattle. The incident will cause Mer and Arizona in particular to suffer from PTSD once again, but they won’t be the only ones reeling from the event that took the lives of Lexie and Mark.

As you may have heard, the first part of the finale takes us back to 2009 before New Directions was formed. We’ll even get to see how the prospective members prepared for their auditions—Rachel and Kurt’s rendition of Wicked’s “Popular” is really on point. But it’s the final few minutes of the episode that will hit close to home and make you reach for the tissues.

The book is definitely going to save Cosima’s life on

Hopefully! But this season will really be focused—at least for Cosima—on the nature of science vs. faith. “The interesting thing about Cosima is she came very close to dying and that wasn’t something that we took lightly,” executive producer John Fawcett says. “That wasn’t something that we did to try and scare the audience, that really was the beginning of a new journey for Cosima in season 3. The fact that she has come that close to death, that she essentially had a near-death experience, changes her because she can’t explain what happened to her. It puts this character, who is so entrenched in the science, in this place where she’s now looking for answers beyond science.”

Why does it look like Ray Palmer is officiating Diggle and Lyla’s wedding on

That’s because he is. “Rick Flag can’t make our wedding. He was going to be officiating, so we’re going to have somebody else doing it,” David Ramsey fields. Since that was a little too easy to answer, I’ll let executive producer Marc Guggenheim tease the game-changing season-ender: “These last episodes, we literally blow the show up,” he says. “By the end of the year, people are going to go, ‘How can the show go back to being what it was?’ The truth of the matter is that it may not.”

After being pulled off his case, Tom has made several new enemies. “Tom’s new assignment is something that if and when it may unravel, may unravel in an unhealthy way,” executive producer Jon Bokenkamp teases. “He’s going to find himself pitted against a rather frightening group of men.”

Soon, and he’s formed a special bond with Agent 33. “He takes on the paternal role in some ways and the leader in some ways, which is completely not what May would see Ward as, especially now that he’s Hydra,” Ming-Na Wen tells me. “Agent 33 absolutely sees him as her king, really. This is the person that will protect her and save her from her former situation and she develops feelings for him, you know, because he’s really good looking.”

Please tell me Barry will find out the truth about Harrison on

Despite the time travel trickery, it still may be sooner than you’d expect. “He gets suspicious at him in [episode] 16 without actual evidence for the first time because of something that Wells says,” Grant Gustin tells me. “It’s the first thing that throws Barry. He’s not necessarily suspicious, but it’s the first thing that starts to lead Barry in the direction of wondering really what’s going on instead of defending Wells.”

We’re going to see Ursula’s backstory during Sunday’s episode, which takes us as far back as 1819 and will also explain what Hook did to wrong Ursula. “It was not sexual,” executive producer Edward Kitsis teases. “It is far worse. When you think about what would be worse than having your heart broken, I would say it would be having your soul crushed.” Bonus: We’ll also soon find out why Ursula and Cruella didn’t end up in Storybrooke in the first place, which will speak to how the Queens of Darkness are connected.

Will Stefan and Damon ever have a normal relationship with their mother on

That probably depends on your definition of normal. After all, much like Stefan, Lily is a creature of extreme guilt. “She has a lot of torment inside of her,” Annie Wersching says. “And then adding this guilt that she feels for what the boys think of her and think that she did to them, [it] really messes with her.” According to Wersching, Mama Salvatore will have a bit of trouble adjusting to her present-day life, and the same goes for her relationship with her sons. However, she does note, “They do eventually become their own version of a mother-son relationship.”

I know we’re supposed to learn more about Jamie when

returns, but will he and Claire finally open up to each other?

Rest assured that Jamie and Claire started their marriage on a very physical note. While that,

, affection will continue, the duo still has a lot to learn about each other. And when the show returns, you can expect multiple secrets to be revealed about each of their pasts … and even their present.

Best news I’ve heard all week: Here’s basically everything you need to know about the new season of

That’s a wrap on this week’s Spoiler Room. Be sure to email your questions to spoilerroom@ew.com or tweet them to @NatalieAbrams.

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