“His Killer Fan” (*1/2 out of four) was a killer mistake about an obsessed fan (Brooke Butler) of a rock singer (Ryan Cooper) who finally gets the chance to play a duet with him but then goes berserk when he shows an interest in her best friend (Teressa Liane) and will stop at absolutely nothing to turn both their lives upside down and have him all for herself. Terminally predictable story lacks any suspense or conviction; cross-pollinate “A Star Is Born” with “Fatal Attraction” and you have an idea on the giant pile of cliches here. Doubtful to attract many “fans” of its own.