Dear Mr. Secret Admirer

Abby loves mysteries, more so the prospect of solving one. Sadly, aside from the occasional 'who stole the last cookie?' or 'where'd my left sock go?', not much mysteries come her way. So when she finds a note in her locker from a 'secret admirer', it didn't matter that it could have just been a prank(i mean, come on who does that anymore?), she is determined to find out wrote it.