ABC’s Castle (which I really, really like) is now in it’s second season and has found a steady, growing following. If you’re not familiar with the show, the basic premise is that Richard Castle (Nathan Fillion), a hugely successful crime novelist uses his connections with the Mayor to be assigned as a tag-along with detective Kate Beckett (Stana Katic) where he helps solve cases in the name of “research” for his books. It’s a pretty unique twist on the old cop show, and I think it bears watching a few full episodes on hulu if you haven’t seen it.

And after the first season, Castle has written a new book loosely based on Beckett. The book, titled Heat Wave features Nikki Heat and her adventures. The first few episodes of the second season have more than a few moments revolving around the release of Heat Wave, which itself is nothing exciting. But the hitch is the book actually exists. It’s “written” by Richard Case, and you can go buy it on Amazon.com right now. It’s even got Fillion’s picture on the back cover.

Now that’s all well and good, but what’s even better is that it seems to be a good book. Hopefully the show will keep doing well, and they’ll keep cranking out quality crime/mystery novels that go with it. It lets you follow along at home folks!

And, obviously, you can follow Richard Castle on Twitter.