Castle Wedding: Where Will Castle and Beckett Get Hitched? Check Out This Sneak Peek!

Exclusive! Watch Nathan Fillion and Stana Katic's fan favorite couple start the wedding planning process in our sneak peek at tonight's episode of the ABC hit

Save the date: Caskett is getting hitched!

Of course, this is old news. In fact, we should've received our official invite by now, no? Maybe ours got lost in the mail? Misplaced invitations aside, Castle (Nathan Fillion) and Beckett (Stana Katic) are knee-deep in the wedding planning process on Castle and we've got an exclusive sneak peek at tonight's episode, "The Greater Good," that finds the fan favorite couple trying to decide on the venue for the TV wedding of the season. No pressure!

So where does Castle want to say "I do"? And where does Beckett want to get hitched? Watch our exclusive clip below to find out! (Hint: we're hoping you don't suffer from motion sickness!)

Aside from debating the location of their wedding, Castle and Beckett also address another big topic in the planning process: "Exactly whom" they are going to invite to their nuptials, which are supposed to take this Spring after Beckett said, "I don't even want us to wait until the fall.)

But the planning will have to be put on the back burner when the duo must investigate the death of a Wall Street trader, which is complicated by the U.S. Attorney Elizabeth Weston (Salli Richardson-Whitfield), Captain Gates' (Penny Johnson Jerald) estranged sister, involvement.

P.S. Castle's season finale is set to air on Monday, May 12. (Hm...could it be a black-tie affair?!)

P.P.S. Make sure to vote for Fillion in the first round of our Alpha Male Madness tournament!

Castle airs tonight at 10 p.m. on ABC.