FBI profiling is a technique used by law enforcement to construct a psychological profile of a perpetrator based on evidence from a crime scene. It is a multi-stage process that includes collecting information, classifying the crime scene, reconstructing the events, generating an offender profile, using statistical analysis, considering neurobiological factors, and assisting the investigation. While not perfect, FBI profiling has helped solve many high-profile cases by providing insights into the offender's personality, motivations, and likely behavior to guide the investigation.