Dr. Sophie Knowles loves using puzzles to make math fun for students. But when winter seizes Henley College, she must thaw out a cold case to track down a killer her most difficult puzzle yet . . . Winter Intersession is in full swing, and campus is buzzing over the concert celebrating the bell tower s reopening. The building has been shuttered for twenty-five years, and Sophie s shocked to learn why a student leapt from it to her death. But she s even more troubled by the secrecy surrounding the case. After Sophie ...

The Quotient of Murder 2014, Wheeler Publishing, Farmington Hills, Mich.

ISBN-13: 9781410468772

Large type / large print

Trade paperback

The Quotient of Murder 2013, Berkley Books

ISBN-13: 9780425262702

Mass-market paperback