It begins on a summer day in Oxford, when a young Argentine graduate student finds his landlady - an elderly woman who helped crack the Enigma Code during World War II - murdered in cold blood. Meanwhile, a renowned Oxford logician receives an anonymous note bearing a circle and the words "the first of a series." As the murders begin to pile up and more symbols are revealed, it is up to this unlikely pair to decipher the pattern before the killer strikes again.
To get the best shopping experience from our website we recommend that you sign in to your shopper
account. By signing in to your account we can tailor the site to your preferences and allow you to
add items directly to your wish list from the book details pages.
Be the first to know about sales, contests, new arrivals, limited time discounts & more!
Terms & Conditions