Brittany Cavallaro's A Study in Charlotte
This book was SO FUN!!! It's all about what happens when the great-great-great grandson of Dr Watson is shipped off to boarding school (on a rugby scholarship!)--the very same boarding school attended by Sherlock Holmes' great-great-great granddaughter, who is just as talented and troubled as her famous progenitor. Obviously a murder ensues--and it's the murder of a complete jerk who they both hate! And they have to band together and solve it--only things quickly get more complicated. And not just because they're teenagers! I really found the writing here super compelling and fun--I can think of a couple of weak spots but nothing major really--I honestly hope this is the start of a series because I want to read more of these ridiculous and awesome kids. A-.
TW for mentions of a past rape.