3.25 actually. 
 1.0 deducted because the romance part took a lot of the plot. I was a little confused at times actually; was the book really about who killed Cassie and why, or are we supposed to guess when Carson will finally kiss Samantha? There are many times when the romance outweighed the mystery and guessing. 
 0.75 deducted for lack of creativity, especially at the beginning. 
 But if you could get past that, it was overall a pretty good read. Samantha was very likable, Carson was H-O-T, and all the other characters were well-developed (i.e. Scott and Sam's mom).