Although the evidence eyewitnesses provide is critical in identifying, charging, and ultimately convicting suspected criminals, the evidence is not infallible. To their credit, the legal system and law enforcement agencies have not overlooked this. Eyewitness Evidence: A Guide for Law Enforcement outlines basic procedures to obtain the most reliable and accurate information from eyewitnesses. A few of the topics discussed in this NIJ Research Report include procedures for interviewing the witness and procedures for witness identification of suspects.