The Sophie Knowles series consist of 4 women sleuths books written by Ada Madison. Sophie Knowles, Ada Madison first wrote The Square Root Of Murder and most recently published The Quotient Of Murder

• Sophie Knowles Series Order

We get the question all the time "What order should I read the Sophie Knowles series?". We would recommend you read the Sophie Knowles series in order by series number which is:
• 1.   The Square Root Of Murder Book
• 2.   The Probability Of Murder Book
• 3.   A Function Of Murder Book
• 4.   The Quotient Of Murder Book