Ada Madison

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. Original. 20,000 first printing.

The Square Root of Murder

When Mayor Graves is found dead with a Henley College letter opener in his back, Dr. Sophie Knowles, a math professor at the college, must solve a complex puzzle of scandal and corruption to catch a killer in their midst. Original. 20,000 first printing.

A Function of Murder

Dr. Sophie Knowles, a professor of mathematics, must employ her keen skills of deduction to solve the murder of her friend, beloved librarian Charlotte Crocker, when the police believe that Charlotte was hiding something. Original. 40,000 first printing.

The Probability of Murder

When winter seizes Henley College, Dr. Sophie Knowles must thaw out a cold case to track down a killer—her most difficult puzzle yet. Original. 20,000 first printing.

Ada Madison

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