Seamus Dever Teases Castle's Season 4 Finale: Ryan and Esposito's Relationship Will Be Tested – Wetpaint Exclusive!

Castle's much-hyped-about Season 4 finale "Always" is right around the corner, and we couldn't be more excited (read: biting our nails in fangirl anticipation). Although much of the focus is currently on Richard Castle and Kate Beckett, we can't ignore Castle's other dynamic duo: Detective Ryan and Detective Esposito.

Wetpaint Entertainment recently caught up with series star Seamus Dever, who dished about what's in store for our favorite wise-cracking sidekicks.

Wetpaint Entertainment: We've got to talk about the big finale!

Seamus Dever: Yeah. A lot of stuff happens. It was a big episode to shoot. It was so big that we went over the allotted eight days, and it was more like 10 days for me, at least. I only wrapped last week, and I did ADR [dubbing] on Tuesday. So, yeah, I just finished.

What happened to make it go past eight days? Are there big action sequences?

Yeah. There's some action stuff that happens. So whenever you do the action stuff, you've got to film little parts and little things. I feel like we shot the same scene for about three days. So it's big.

Rob Bowman’s directing it. He's our best director. He's a wonderful director, and he really wanted to get the most out of it. He took his time with the things where he really felt it needed it, and I think people are going to like it.

Aside from that, the writing's great. Some crazy stuff happens. Stuff that, I guess, we can recover from, but some interesting shifts in relationships. So I think for one relationship, the audience is going to be real happy, and I think for another relationship, they're going to be devastated. So it's going to be interesting to see how people respond.

For the full Q&A visit Wetpaint.