THE LUST MURDER IS UNIQUE AND IS DISTINGUISHED FROM THE SADISTIC HOMICIDE BY THE INVOLVEMENT OF A MUTILATING ATTACK. BASICALLY TWO TYPES OF INDIVIDUALS COMMIT LUST MURDER--THE ORGANIZED NONSOCIAL AND THE DISORGANIZED ASOCIAL PERSONALITY. THE ORGANIZED NONSOCIAL TYPE FEELS REJECTION BY AND HATRED FOR THE SOCIETY IN WHICH HE LIVES. HIS HOSTILITY IS MANIFESTED OVERTLY AND THE LUST MURDER IS ITS FINAL EXPRESSION. THE DISORGANIZED ASOCIAL TYPE ALSO FEELS HATRED FOR HIS WORLD, BUT IS WITHDRAWN, INTERNALIZED, UNTIL HE ACTS OUT HIS FANTASY IN THE MURDER. CERTAIN FACTORS CAN INDICATE THE PERSONALITY TYPE INVOLVED IN A LUST MURDER--LOCATION OF THE BODY, EVIDENCE OF TORTURE OR MUTILATION PRIOR TO DEATH, SMEARING OF THE VICTIM'S BLOOD, EVIDENCE OF RAPE, AND THE AVAILABILITY OF PHYSICAL EVIDENCE AT THE MURDER SCENE. THE CRIME IS PREMEDITATED, YET IT IS A CRIME OF OPPORTUNITY IN WHICH THE VICTIM IS NOT USUALLY KNOWN TO THE MURDERER. THE USE OF PSYCHOLOGICAL PROFILING IN SUCH CRIMES MAY BE OF ASSISTANCE IN DETERMINING THE PERSONALITY TYPE INVOLVED BUT MUST NOT ALTER OR REPLACE PRESCRIBED INVESTIGATIVE MEASURES. FOOTNOTES ARE GIVEN.