New York City, 1972-A dabbler in mathematics and chess, Catherine Velis is also a computer expert for a Big Eight accounting firm. Before heading off to a new assignment in Algeria, Cat has her palm read by a fortune-teller. The woman warns Cat of danger. Then an antiques dealer approaches Cat with a mysterious offer: He has an anonymous client who is trying to collect the pieces of an ancient chess service, purported to be in Algeria. If Cat can bring the pieces back, there will be a generous reward.