The unstoppable Red Blazer Girls are back in The Vanishing Violin to solve yet another captivating mystery, or mysteries. Someone has been breaking into their school and instead of stealing or vandalizing, they are redecorating! But their big mystery doesn't start until Margaret gets a violin bow in the mail that is worth a lot of money, and with it the clues to find the even more expensive violin that goes with it. Another real problem comes about when a violin is stolen from Margaret's friend Mr. C. who owns a violin store by Perkatory, the girls favorite Café ( which the Blazer's band also performs at). Mr. C's alarm never went off and no window or door is broken, so the only thing more mysterious than who did it, is how they did it. Relationships are heating up too. Not only do Rafael and Sophie date, but Margaret gets a new crush on a boy named Andrew from her music class. The Red Blazer Girls also have a new rival, Livvy, who hates the group mostly because of Leigh Ann; but now because she met Andrew, and doesn't want him to like Margaret. The best part of the book is at the end, with a couple of plot twists and surprises you're sure to enjoy.