The Candymakers is a great book by Wendy Mass.Even though its 453 pages I read the whole book in 3 days. It is going on my  top ten book list as number 1. It is a book where you change to different perspectives of the 4 characters. Here is a quick summary of it:
 4 contestants are  sent to the candy factory Life is Sweet  for a candy making contest. But someone is after the secret ingredient and someone is not who they seem to be.

If you would like to buy this book it is $6.99 but totally worth it.