Castle Investigates a Sci-Fi Convention Murder

To step onto Castle's Hollywood soundstage one early October afternoon is to boldly go where no author and his muse have gone before. Today's action is unfolding not in a gritty NYPD precinct, but on an elaborate spaceship set, all sleek steel and high-tech consoles, manned by actors clad in costumes that would look right at home aboard the USS Enterprise.

Under the watchful eye of director Jonathan Frakes (aka Star Trek: The Next Generation'sCommander William T. Riker), a Shatneresque captain stoically assesses...