Handley has written, edited, or contributed to 160 books to date, including 100 volumes of Eaglemoss's Star Trek Graphic Novel Collection, for such publishers as DC Comics, IDW, BOOM! Studios, Topps, Dark Horse, Titan Books, and more. He currently writes articles and prose fiction for Paramount's Star Trek Explorer magazine. Rich is considered an expert historian regarding Star Trek, Star Wars, Planet of the Apes, Swamp Thing, Watchmen, and Back to the Future, and he has written about other franchises as well, including Battlestar Galactica, Hellblazer, Stargate, Dark Shadows, The X-Files, Twin Peaks, Red Dwarf, Blade Runner, Doctor Who, Buffy the Vampire Slayer, Batman, Godzilla, and more.