If the television series Castle wasn't already "meta" enough with the show being about a writer pairing with a cop for inspiration on the novels he's working on and then in the show we meet the woman who is going to play the cop he's partnered with in a movie made from his novels… well now they are taking it one step further.
Variety is reporting that ABC is in early development for a drama series based on the Derrick Storm novels written by Richard Castle (Nathan Fillion) prior to him meeting Kate Beckett (Stana Katic). Kingswell Publishing has been making the fictitious novels talked about in the series into real novels available for purchase and written under the named Richard Castle. A dozen books have come out from the combined Nikki Heat and Derrick Storm series. Where Nikki Heat is based on the Castle/Beckett relationship seen in the show, the Derrick Storm character is a spy who gets called on by the CIA for mysterious missions.
The television series touched on the Derrick Storm novels a few times, most significantly in the fourth season when Jennifer Beals guest starred as Sophia Turner in an episode called Linch Pin. The character of Turner was Castle's first muse and was the basis for the character of Clara Strike in the Storm novels.
Gregory Poirier is writing the pilot and series creator Andrew Marlowe will be on board to executive producer along with Poirier and Terri Edda Miller. The project is not envisioned as a "Castle" spinoff, however.
Castle returns for season 7 on September 29th.