Sounds like Castle may be feeling guilty at bringing Nikki Heat into Kate's life in the first place. your right Kitten- thank goodness it is over 2 nights – in a row!!!!

Now we know what the Boom is…

I will put the little spoiler part of the article here..

What can you tell me about the two-part Castle episode that guest stars Dana Delany? — Mitch
ADAM: Delany plays an FBI agent who joins Castle and Beckett in the hunt for a serial killer who's a little obsessed with Nikki Heat, the character Castle based on Beckett. Delany gets abducted, but Beckett is the one who should be looking over her shoulder. "I don't know if Beckett's going to survive the episode," Stana Katic jokes. Even so, Beckett's apartment is blown up before the first hour ends.

I always thought an obsessed fan was just begging to become a storyline.. Love Stana's joke by the way she is sounding more and more like Nathan Fillion the more I read of her!

But maybe Castle will stay someplace else with her to protect her!

I don't think she'll stay at his place. I just wonder if he'd offer it (feeding our fantazy).
How would Castle protect Beckett from a crazy fan? I think he'll come up short. There's nothing he could do. Well, he can handle a gun (on a non-living target) but would he be allowed to be armed? Only thing would be for him to pay for her/them to go away. I can't see her taking off, though. She'll stay around to fight the guy. But Castle will help with solving the case, as usual.
Wonder how big the bomb is, how much of Beckett's apartment gets wasted. Looking forward to seeing Beckett's reactions to all this – another opportunity for Stana to show off in a dramatic episode. Emmy – watch out!

Soo clever by ABC to reveal this spoiler now. I get the same feeling I had in November/December, when we had lots of episodes with little Beckett/Castle-relationship-movement, but we had heard enough about episodes 212-214 to be happy anyway.

Yeah, I believe Castle will feel even more guilty than in Sucker Punch; this time someone attacks Beckett because of him.
Can't wait for2x17&18.

I agree with others that Castle will probably feel super-guilty about basing the character on Beckett and thereby exposing her to crazed fans. Beckett will probably be super-pissed initially, but I really hope that she'll come around. Maybe Martha or Captain Montgomery will set her down and help her realize that she can't blame Castle, but rather the bomber.

Previous posters are right – I can't wait to see how Stana plays the whole storyline. I'm sure she'll be awesome as usual. Maybe this will result in the scenario that we've all been talking about in fan fiction – where Beckett ends up in the hospital unconscious and Castle goes to visit her. Or maybe Beckett is listed as missing and Castle and everyone else don't know if she's alive or not. I couldn't wait to see THAT.

While I love Stana's joke about maybe not surviving the episode it won't pack much punch if they play it like she's not alive as some cliffhanger. We know she isn't going to die. I do like the idea of her maybe being banged up a little and see Castle's reaction to that. We know he's going to feel guilty enough about bringing this kind of attention to her but to see her physically hurt will really hit him hard.

I wouldn't mind watching that angle but I almost hope she isn't even near the apartment when it blows. I think the emotional impact of watching her react to this type of an attack on her, discovering what's been lost (personal belongings from her mother maybe), would be much stronger than her being hurt physically.

If she has any anger I hope it isn't directed at Castle either. It's not his fault and I have a hard time seeing her blame him. Even intially. I'd like to think they're past the blame game. But I am on board with watching a pissed off Beckett go after the suspect. She will be relentless.

I'd die if she stayed with Castle. Even for a couple nights just until she finds something new. The potential scenes between her and Castle, Martha, and Alexis? Oh my.