The document introduces several main characters in a mystery story: Collin Miller, a brave and strong 18-year-old boy; Professor Fletcher, a mysterious man on a terrible mission seeking something strange; Claudia, an attractive girl looking for a job who loves the night; and a dangerous vampire that must be killed, though its identity is unknown. It poses questions about the professor's mission, who the vampire killer is, and whether Collin and Claudia are in love to entice the reader to learn more by reading the book.