Title: The case of the ballet bandit (Mary-Kate and Ashley)
Description: The twins find another mystery on their hands when they visit the New York City Ballet and learn that the star ballerina's diamond tiara has been stolen.
Subjects: Twins Fiction, Ballet Fiction, Mystery and detective stories, Ballet dancing, Fiction, Children's fiction, Robbers and outlaws, fiction, Ballet, fiction, Olsen twins (fictitious characters), fiction, Twins, fiction