The justice system depends on evidence. Generative AI now challenges the reliability of that evidence while simultaneously offering powerful new investigative capabilities. For violent crime investigators and prosecutors, the stakes are immediate and profound. This keynote introduces a three-dimensional framework for understanding AI: capabilities, tools, and applications. It examines how synthetic media, AI-generated communications, automated analysis systems, and algorithmic bias affect search decisions, digital evidence collection, forensic interpretation, charging determinations, and courtroom credibility. Attendees will gain practical strategies to identify AI-driven risks, avoid automation bias, maintain evidentiary integrity, and ensure that emerging technology strengthens justice rather than undermining it.