Can we make deterrence work? Criminal justice agencies have always tried, but the results - whether of preventative patrol or the death penalty - have always been dubious. These three vignettes on Boston, Lowell, and Minneopolis highlight a new approach to crafting deterrence strategies, and in the larger tales that lie behind them there is a reason to be optimistic. None of these operations were controlled experiements. But the experiences to date are interesting enough to support an exploration of the basic crime-control logic that was applied to the work in Boston, Lowell, and Minneapolis and that is currently being explored in a number of other jurisdictions.