MIchael Broad 
#4 Spooky Ballet! [PDF ebook] 

Agent Amelia returns with three more spooky-but-funny adventures as she secretly saves the world! The three secret agent case files in this book are:

The Case of the Spooky Ballet, in which Amelia is tricked into taking a dance class, but the teacher uses her class to take revenge on the local theater. It takes all of Amelia”s mind control to foil her!

The Case of the Gobbledygook Books, in which a new librarian has reprogrammed all the school’s computers with intent to rule the world. But Amelia overcomes her—with a little help from the real librarian and the works of William Shakespeare!

The Case of the Whispering Scarecrow, in which Amelia goes on a picnic with her mother, only to find out a phantom is stealing the food! Amelia soon uncovers the thieves—a flock of crows led by a scarecrow. But who’s the real mastermind? Trust Amelia to find out!