A Function of Murder

by Ada Madison

Published 1 December 2012

The Probability of Murder

by Ada Madison

Published 1 March 2012
Dr. Sophie Knowles is a professor with a way of making even the most complex math problems fun for her students. But when the school's beloved librarian is found shot to death in the stacks, Sophie learns that her friend was more complex than she ever knew. Includes puzzles and logic problems.

The Quotient of Murder

by Ada Madison

Published 5 November 2013

The Square Root of Murder

by Ada Madison

Published 1 July 2011
While celebrating famous scholars of the past with her students, Dr. Sophie Knowles, a much loved math teacher at Henley College, must add up the clues to prove her assistant's innocence when she is accused of killing Dr. Keith Appleton, the most disliked professor on campus.