Avatar is a novel by John Passarella set in the fictional universe of the U.S. television series Angel.
Cordelia suggests beginning a Web site for their detective agency, but Angel is hesitant—as Doyle points out, "people in trouble want to interface with a face." Meanwhile, the police discover a trail of corpses across the city. The only connection between these victims (apart from the cause of death) is their hobby of online chatting. It seems a techno-savvy demon must be on the prowl, hoping to complete a ritual going even beyond a World Wide Web.
Angel books such as this one are not usually considered by fans as canonical. Some fans consider them stories from the imaginations of authors and artists, while other fans consider them as taking place in an alternative fictional reality. However unlike fan fiction, overviews summarising their story, written early in the writing process, were 'approved' by both Fox and Joss Whedon (or his office), and the books were therefore later published as officially Buffy/Angel merchandise.