Twenty-year-old Abby Sherman has a blog on a social networking website called ""mycorner.com."" When she innocently blogs about a very vivid dream, she sets in motion the events that comprise the bulk of this novel, in which Christy nominee Olsen (The Assignment) admirably ties together myriad plot points. Not only does Abby blog, but she also appears on an Oprah-like show, travels the world, learns about several cultures and religious traditions, and fights battles against the spiritual forces of darkness. The juxtaposition of Abby's youth against her wisdom and power are reminiscent of Buffy the Vampires Slayer, and the book's take on spiritual warfare seems to owe more to Joss Whedon than it does to Frank Peretti. Olsen fascinatingly weaves questions of race and gender into the epic supernatural war he depicts, and despite staying faithful to the conventions of the suspense-thriller genre, he only occasionally wanders into cliched territory. Though much of Abby's dialogue develops her as a smart, strong heroine, the novel's weakest points are Abby's blog entries and her heartfelt but largely stultifying monologues about her otherworldly gifts. Nonetheless, Olsen delivers an entertaining thriller likely to be enjoyed especially by fans of the spiritual warfare genre.