Although much research into deceptive communication has been conducted in the last several years, little of it has focused on deception outside of a North American context. Similarly, most deceptive research has investigated face-to-face verbal communication and neglected computer-mediated communication modes. This paper describes a study in progress on deceptive computer-mediated communication, looked at across two national cultures, Spain and the U.S. The paper reviews the relevant literature and theory and presents hypotheses and the research design.