Finding the hot zone : criminal geographic profiling -- Fighting crime with statistics 101 -- Data mining : finding meaningful patterns in masses of information -- When does the writing first appear on the wall? changepoint detection -- Image enhancement and reconstruction -- Predicting the future : Bayesian inference -- DNA profiling -- Secrets-- making and breaking codes -- How reliable is the evidence? doubts about fingerprints -- Connecting the dots : the math of networks -- The prisoner's dilemma, risk analysis, and counterterrorism -- Mathematics in the courtroom -- Crime in the casino : using math to beat the system.