On February 11, 2006, David announced at the WonderCon convention in California in that he had signed an exclusive contract with Marvel Comics. "Fallen Angel", "Soulsearchers and Company" and David's "Spike" miniseries were "grandfathered" into the contract, so as to not be affected by it. The first new project undertaken by David after entering into the contract, which he announced on April 5, 2006, was writing the dialogue for "", the comic book spin-off of Stephen King's "The Dark Tower" novels, which was to be illustrated by Jae Lee, as well as scripting the subsequent "Dark Tower" comics.