Modern criminal investigations require the review and analysis of bank account records that detail the deposits, checks, wire transfers, credit and debit memos, withdrawals, bank checks, and any other income or outflow from a bank account or accounts. The depth of this analysis depends on the needs of the investigation and the time constraints under which it is done. This monograph provides an exemplar of one approach to the analysis of bank records as part of a criminal investigation. Indicators of particular types of illegal activities that may be discovered during the review of bank records are also presented. The financial analysis described focuses on records that relate to a checking or savings account. Other financial transactions -- safe deposit activity, loans, bank credit card activity, and investments -- are excluded. One section of the manual contains information on analyzing business records as they support or conflict with banking records and/or each other. The analysis described is tactical, as it is geared toward tracing assets or determining whether crime profits are present. It is not designed to support strategic analysis of banking institutions or their roles in criminal activity. Appended supplementary information, 63 references, and a subject index