You arrive home to an anonymously delivered package, containing a cryptic note and a playing card of the Joker. A chill runs down your spine as you recall the plot lines of so many thriller stalking movies—most of which ended badly for the victim. Could the package contents be tied to those odd voicemails you have been receiving on your unlisted number? Should you call the police?

If you have ever been in this unenviable position, you are not alone. Research explains how stalking involves situational awareness, knowledge, and perception.

Stalking is an offense defined not only by the conduct of the perpetrator but also by the reaction of the victim. Fear mediates perception of a perpetrator’s behavior depending on a variety of factors, including everything from knowledge of stalking law, to media exposure, to the nature of the relationship with the stalker, if any. Because victim fear is subjective, it also complicates the response and reaction of friends, family, and law enforcement.

The fear created by stalking behavior often prompts changes to a victim’s routine, requiring them to strategize methods of disengagement and avoidance—especially when pursuers and victims share the same workplace,........

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