The Square Root of MurderDownloadable Audiobook - 2011
High school sleuths P.C. Hawke and Mackenzie Riggs quickly regret their decision to take a killer calculus class at Columbia University. Not only is their math work more than anything they've ever tried before, but their professor loves to ridicule anyone having trouble keeping up -- which is everyone in class. But as mean as she is, it's hard to imagine who might hate Professor Dunaway enough to muder her!
Publisher: Prince Frederick, Md. : Recorded Books ; [Prince Frederick, Md.] : [Distributed by] OneClick Digital, 2011, p2003