In recent years, Parks has turned to writing. He has written three graphic novels for Oni Press: Union Station, Capote in Kansas and Ciudad. Capote in Kansas was named a Notable Book by the state of Kansas- the first graphic novel to be so honored. Ciudad, which was released in December of 2014, was developed with Joe and Anthony Russo, the directors of Captain America: The Winter Soldier. Parks has authored the Green Hornet and Lone Ranger franchises for Dynamite, and has written Daredevil for Marvel Comics. He has adapted three Jonathan Kellerman novels to the graphic novel format for Random House. Parks is currently inking Batman Beyond and other titles for DC.