The seventh-grader version of a Raymond Chandler PI, Matt Stevens coolly navigates the mean streets (okay, the mean hallways) of Franklin Middle School in a first novel with an ingenious premise: junior high noir. Matt's classmate, the once-bullied Vinny Biggio, commands a whole "organization," complete with hit men, in this case boys and girls who use loaded squirt guns, stealth attacks and their peers' predictable responses (choruses of "Jimmy peed his pants!") to ensure their targets' permanent and total ostracism. The plot has to do with the spectacular takedown of one Nicole Finnegan, aka Nikki Fingers, the school's most feared "trigger-girl," that is, until her recent retirement from Vinny's operation. Just who ordered the hit on Nikki, and why? Twists and curve balls keep readers guessing; extended jokes like one about a petty thief's desperate need for cash ("On the surface, Peter was a happy-go-lucky model student, but underneath, he had a dirty little secret: He was a Pixy Stixer") will keep them laughing. With crisp prose and surprisingly poignant moments, Ferraiolo's debut entertains on many levels. Ages 10-14.