Nora Grey is a regular teenager, except for the fact that she's in a forbidden relationship with her guardian angel, Patch. Nora gets suspicious when Patch refuses to answer some of her questions. Her doubt soon deepens when she suspects that Patch had something to do with her father's murder. If Patch truly loves her, then why does he keep lying to her? I enjoyed Crescendo. It was exciting and it kept me reading late at night. The only thing I disliked was the lack of good female characters. Nora, the most promising girl, got on my nerves quite often. I strongly recommend that you read this book if you want a quick, fun read.