Law enforcement officers are trained to operate in the realm of the factual: hard data, eyewitness statements, measurable evidence, repeatable patterns. Yet across the United States, a quiet thread of unexplained incidents has persisted for decades-events that officers witness, record, and carry for the rest of their lives, even when protocols offer no language for what they encountered. Code Unknown: Police Encounters with the Paranormal explores these incidents through a structured, investigative lens. Each account is grounded in real geographical locations, regional folklore, archived reports, and documented testimonies. While certain narrative elements have been enhanced to preserve clarity or atmosphere, the core events are rooted in actual experiences shared by those trained to observe without exaggeration. These pages reflect a hidden side of police work-where officers confront not only danger but the unexplainable. In a profession built on certainty, these encounters challenge everything they know. Here, the boundaries between "case" and "legend," "suspect" and "entity," blur in ways that demand a deeper understanding of fear, memory, and the unknown.