Code Unknown: 25 Missing Persons Unit Encounters with the Paranormal (Code Unknown Series)

When someone disappears, investigators search for evidence. But in these cases, the evidence keeps appearing after the person is gone.

In Code Unknown: 25 Missing Persons Unit Encounters with the Paranormal, detectives, dispatchers, analysts, search coordinators, K-9 handlers, evidence clerks, and field officers recount active missing-person investigations where ordinary procedure collided with the impossible.

Surveillance footage shows people after they vanish. GPS signals lead into dead zones. Radios transmit voices from the missing. Search maps change without explanation. Personal objects appear where they should not be.

Some were found. Others were not.

But in every case, one piece of evidence remained impossible to explain.