Alex Duval is a pseudonym for a pair of authors, who have written a series of young adult novels known as the "Vampire Beach" series. The books, set in Malibu, California, follow the life of Jason Freeman, a high school student who moves to the area and discovers that it is populated by vampires. The series blends typical teenage issues with supernatural elements, offering a mix of drama, romance, and paranormal adventure. The "Vampire Beach" series is known for its fast-paced storytelling and has been well-received by fans of the young adult vampire genre.