But thanks to a recent spoiler from TVLine, our void is slowly dissipating. The website confirms that not only will there be a Comic-Con-themed episode in Season 5, but it will also be directed by Star Trek veteran Jonathan Frakes.
Scheduled to air this fall, the episode dives headfirst into a "world of egotistic celebrities, diehard fans, and enough drama for two galaxies."
In other words, right up our alleys.
Although it won't completely make up for Castle's geekfest no-show, we'll take what we can get. But is it too much to ask to see Kate Beckett in costume?