In December, 2007, the Bureau of Justice Statistics (BJS) came to the U.S. Census Bureau with a request to launch a new Identity Theft Supplement, which was co-sponsored by the Federal Trade Commission (FTC), the Office of Victims of Crime, the Bureau of Justice Assistance, and Office of Justice Programs. A draft questionnaire existed, and in a series of lengthy twice-weekly-meetings over several months, staff from the Demographic Surveys Division and the Center for Survey Methods Research in the Statistical Research Division met with the sponsors to make major changes to the questionnaire and finalize it for pretesting. Staff from the Center for Survey Methods Research in the Statistical Division conducted cognitive interviewing with the revised questionnaire. This report documents the results of the pretesting.