After an eight-month delay that drove some fans to brink of madness, Harry Potter and the Half-Blood Prince finally hits theaters on July 15th -- and Entertainment Weekly's new cover story is a behind-the-scenes exclusive on the film. Half-Blood Prince encompasses young love run amuck, secret missions, and impending war. Most Hollywood insiders expect it to be one of the year's biggest hits, partly because it's rated a family-friendly PG, whereas the last two Potter films were PG-13. Still, it will be interesting to see how the movie's brand of innocent romance plays with young audiences smitten by the neo-goth sexiness of Twilight. Even Potter star Emma Watson read all four Twilight books after a friend turned her onto the series last year. "I mean, I wouldn't say I was one of the psycho fans," she says. "Absolute madness, that phenomenon, isn't it?"