<p>Twelve-year-old detectives Steve, Matt, and Jenny agree to help their friend Tyrone with a unique problem &ndash;his niece thinks she&rsquo;s a vampire. Believing the girl simply has an over-active imagination, the trio spends the night at her home, determined to ease her worried mind. But when the young girl vanishes and a bat turns up in her place, the three friends find themselves facing something they never thought possible &ndash;a real vampire.</p>