The Barbie Diaries: High School Mystery Activate the BDA (Barbie Diary Assistant), packed with lots of cool investigative tools like the Picture Descrambler, Infrared Viewer and MP3 Decoder. Explore 19 different locations at the high school including the cafeteria, Principal's Office and even the roof. Keep on your toes as you follow the clues through a food fight, a gymnastics class and a wild soccer practice.