1. A method of detecting fraud during a real estate transaction, the method comprising: using a computer data processor to: access a database of real property prices in a geographic area in which a subject real property is located; using data from the database or data from a requestor to generate a temporal data set comprising a current yearly real property price for the subject real property and a set of past yearly real property prices for the subject real property; generate from the database a spatial data set comprising a current yearly real property price for real property with similar characteristics as the subject real property and a set of past yearly real property prices for real property with similar characteristics as the subject real property; generate a set of temporal variances; generate a set of spatial variances; compute a spatial distortion based on the set of spatial variances; compute a temporal distortion based on the set of temporal variances; compute a total distortion by adding the temporal distortion to the spatial distortion; and produce a distortion ratio score to indicate a likelihood of fraud based on the total distortion.