It’s a case of life imitating art, or television imitating TV fiction. ABC has put in development a drama series based on the Derrick Storm series of mystery novels written by Richard Castle, the fictional author played by Nathan Fillion on the ABC drama Castle. ABC Studios is producing the project, about a PI-turned-spy working for the CIA. Castle creator Andrew Marlowe is executive producing under his overall deal with ABC Studios, along with his wife, Terri Miller, who also works on Castle. Missing creator Gregory Poirier will write the script and also executive produce.