A core competency of the Vander Weele Group is the collection and analysis of large data sets. Data, ranging from accounts payable to credit card expenditures, can be used to identify suspicious patterns suggesting fictitious invoices, ghost payrollers, excessive credit card spending or improper payments. We undertake the process from start to finish. First, we prepare the data by standardizing common entries categorized differently. Then we apply algorithms to identify anomalies, and finally, we investigate to determine the underlying reasons for the problematic outliers. Our work, which includes trend analysis, has saved clients millions of dollars.