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  • 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…
    The Probability of Murder

    The Probability of Murder

    By Ada Madison rating of short cover   ( 90 customer ratings) Penguin Group US, March 2012 ISBN: 9781101560860 Language:  English
    Download options: Adobe DRM EPUB
    1 1
  • Dr. Sophie Knowles is a math professor with a knack for creating complex puzzles that delight her students. But now, at the close of the academic year, she must solve a crime that doesn’t quite add…
    A Function of Murder

    A Function of Murder

    PROFESSOR SOPHIE KNOWLES - 3 By Ada Madison rating of short cover   ( 46 customer ratings) Penguin Group US, December 2012 ISBN: 9781101618738 Language:  English
    Download options: Adobe DRM EPUB
    2 2
  • Dr. Sophie Knowles teaches math at Henley College in Massachusetts, but when a colleague turns up dead, it's up to her to find the killer before someone else gets subtracted.
    The Square Root of Murder

    The Square Root of Murder

    By Ada Madison rating of short cover   ( 317 customer ratings) Penguin Group US, July 2011 ISBN: 9781101538128 Language:  English
    Download options: Adobe DRM EPUB
    3 3
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