Title: The Venetian policeman
Description: Sophie and Sam thought they knew everything there was to know about Gus Jenkins, the private detective they're working with.  But when Gus's life takes a turn for the worse, the girls discover that the has a missing son (who happens to be a total stud), and they decide that they just have to find him.  Can they manage to find Gus's son, while keeping their identity and their motives a secret?
Subjects: Missing persons, Fiction, Children's fiction, Mystery and detective stories