Bad day for ballet

"Mysteries seem to find young Nancy Drew and her pals Bess and George no matter where they go--even at ballet class! But with her trusty notebook and sleuthing skills. Nancy gets to the bottom of every case. It's the day before the big recial and someone has stolen the tape with the music! Mean Brenda Carlton points the finger at Bess. But Nancy thinks Brenda's jealousy of her best friend Wendy, who has a big role in the dance, makes her a suspect, too. The more Nancy investigates, the more this mystery doesn't add up. Will she find the rape in time for the performance?"@en
"When the time for the big recital arrives, the tape of ballet music disappears, and Nancy has to use some very fancy footwork to get it back."@en
"Mysteries seem to find young Nancy Drew and her pals Bess and George no matter where they go--even at ballet class! But with her trusty notebook and sleuthing skills. Nancy gets to the bottom of every case. It's the day before the big recial and someone has stolen the tape with the music! Mean Brenda Carlton points the finger at Bess. But Nancy thinks Brenda's jealousy of her best friend Wendy, who has a big role in the dance, makes her a suspect, too. The more Nancy investigates, the more this mystery doesn't add up. Will she find the tape in time for the performance?"@en