The overall intent of the guide is for users to appreciate and apply high-quality research in the development of a culture of self-evaluation that produces evidence-based policing. The guide acknowledges that it is not all-inclusive; however, it does indicate a number of possible rewards and challenges for agencies that conduct their own experimental evaluations; and it discusses a number of practical issues for agencies interested in conducting a randomized trial. It includes a number of resources on evidence-based policing and experimentation at the end of each section. Prior to presenting the 10 steps for conducting an in-house experiment, the guide defines evidence-based policing, discusses the role experiments play in evidence-based policing, and describes the Sacramento hot spots experiment. The 10 steps for conducting an in-house evaluation are as follows: 1) deciding to evaluate; 2) deciding what to evaluate; 3) creating an initial working group with key stakeholders; 4) anticipating challenges; 5) garnering support for the experiment specifically and for research generally; 6) planning and strategizing for the experiment; 7) designing the experiment; 8) ensuring successful experiment implementation; 9) ensuring successful data collection and analysis; and 10) completing the experiment.