Credit: ABC Photo: Laura Prepon as Nikki Heat in Episode 1

One thing that sets Castle apart from other crime procedurals — besides its wit, charm and Nathan Fillion (Castle) of course — are its tie-ins to real life. For example: the Nikki Heat books, a series of crime novels credited to author Richard Castle (yes, the fictional character) that are proudly displayed in real bookstores all across the nation.

If you haven’t checked them out yet, it’s probably time you did. Why? For starters, Heat Wave and Naked Heat, the first two novels in the series, both debuted on the New York Times bestseller list. And you’ll want to be caught up when the new Richard Castle book, Heat Rises, debuts next fall, right?

Castle creator Andrew Marlowe just announced that a new book is def in the works. “[Castle] is writing a book and we’re going to touch on that by the end of the season,” Marlowe teased. “His new book is called HEAT RISES and Richard Castle is actually hard at work on that and [it] will be available in the fall at a [real] bookstore near you.”

Even if you’re not an avid reader, Andrew promises the books are good reads, especially for fans of the show. “It’s really fun for our loyal fans because they can see all the moments the [books have] drawn from cases,” he said. “Castle has been following Beckett around and he’s been using that material. The feedback I’ve gotten from fans, is [the books] just delight them to say, ‘Oh, that’s from that episode! That’s when Castle saw Beckett do that!’ And we love them for [paying attention].”

Source: Castle Spoilers