The Quotient of Murder (Professor Sophie Knowles #4) (Paperback)

By Ada Madison

Berkley, 9780425262702, 304pp.

Publication Date: November 5, 2013

List Price: 7.99*
* Individual store prices may vary.


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 performs some quick calculations, she’s left with a nagging question: Was it really suicide?

When one of Sophie’s favorite students, a performer in the concert, is brutally beaten and left in a coma, Sophie’s mind kicks into overdrive. The horrific incidents seem too coincidental to be unrelated, but can Sophie put together the pieces from a twenty-five-year-old murder before any other students get hurt?

About the Author

Ada Madison is the pen name of Camille Minichino. Camille is a retired physicist and math teacher and is the author of the Professor Sophie Knowles Mysteries, as well as short stories and articles. She's also Margaret Grace, the author of the Miniature Mysteries.

Praise For The Quotient of Murder (Professor Sophie Knowles #4)

Praise for the Professor Sophie Knowles Mysteries:
 “Delightful ...petty academic politics and faculty secrets prove fertile topics in Madison’s very capable hands.”—New York Times bestselling author Miranda James
“A clever puzzle...Madison has found the right equation for success in this entertaining series debut.”—Richmond Times-Dispatch

“[An] enjoyable academic amateur sleuth filled with puzzlers, brain teasers, and mathematician quotations. ”—Genre Go Round Reviews