Since the crime of stalking requires that the victim suffer "substantial emotional distress" because of the stalker's conduct, police should document victim actions that suggest emotional distress from the stalking, such as moving to a new location, obtaining a new phone number, changing work schedule, and pursuing various security measures. Investigators in stalking cases should also obtain information about the suspect, including behavior, interests, and state of mind at various times. Information on the suspect may be obtained from personal interviews with the suspect, material created or kept by the suspect, interviews with those who know the suspect, and a review of official records. Investigators, in gathering information, should determine whether the victim is taking proper precautions. After gathering information, the investigator should determine the current threat posed by the stalker. Such factors as past incidents of violence, the use or possession of weapons, and violations of restraining orders should be considered. Case management involves discouraging or deterring the suspect from committing violence against the victim or threatening to do so. Intervention techniques with the suspect could include direct contact, restraining orders, arrest and detention, mental health intervention, and prosecution. Eleven suggestions are offered for how an investigator might advise a stalking victim about protective measures.