His other Spider-Man work during this decades included 2019 five-issue miniseries Symbiote Spider-Man, which holds a 7.5 out of 10 rating at the review aggregator Comic Book Roundup, and the 2020 follow-up miniseries Symbiote Spider-Man: Alien Reality, which holds a 7.6 rating at Comic Book Roundup. Novels David's career as a novelist developed concurrently with his comic-book writing career. David had been working at a publisher that went out of business, and a former coworker from that publisher became his agent, through whom he sold his first novel, Knight Life, to Ace Books. Although the sale was made before he wrote any comic books, the novel was not published until eighteen months later, in 1987. The novel depicts the reappearance of King Arthur in modern-day New York City. Another early novel of his, Howling Mad, is about a wolf that turns into a human being after being bitten by a werewolf. Ace Books hired David to write the Photon and Psi-Man novels, though they published them under the "house name" David Peters, over David's objections. David updated Knight Life years later when Penguin Putnam brought it back into print in 2003, and made it a trilogy with the sequels One Knight Only and Fall of Knight, which were published in 2004 and 2007, respectively. Penguin rereleased Howling Mad and the Psi-Man books under David's actual name. David first began writing Star Trek novels at the request of Pocket Books editor Dave Stern, who was a fan of David's Star Trek comic book work. His Star Trek novels are among those for which he is best known, including Q-in-Law; I, Q; Vendetta; Q-Squared; and Imzadi, one of the best-selling Star Trek novels of all time. He created the ongoing novel series, Star Trek: New Frontier, a spin-off from Star Trek: The Next Generation, with John J. Ordover in 1997. New Frontier continued until September 2015, with the publication of the third part of the digital novel, The Returned, the final New Frontier novel to date. David's other science fiction tie-in novels include writing five Babylon 5 novels, three of which were originals, and two of which were adaptations of the TV movies Thirdspace and In the Beginning. His other novel adaptations include those of the movies The Return of Swamp Thing, The Rocketeer, Batman Forever, Spider-Man, Spider-Man 2, Spider-Man 3, Hulk, The Incredible Hulk, Fantastic Four, and Iron Man. He wrote