Law enforcement is joining the fast-growing artificial intelligence (AI) research field. The chapter tries to fix that. This chapter utilized a “systematic literature review.” The authors gathered research papers on using algorithms and AI in police work. This was done with Scopus, a fancy academic database. They searched for papers on “law enforcement,” “policing,” “crime prevention,” “crime reduction,” and “surveillance.” Combine these terms with “algorithm” or “artificial intelligence.” They found that AI has great potential to aid law enforcement. It can recognize faces, forecast crimes, and track people. These AI tools usually analyze photos, behavior, language, or a combination. However, there are significant “but” ethical issues that exist. AI can cause unjust treatment, confusion about responsibility, oversurveillance, and privacy invasion. AI's benefits and cool abilities are often highlighted over its drawbacks. Another observation is that writings on the same topics agree on what AI can achieve, its potential, and what we should explore next.