The Watcher of Westfield, New Jersey
The Watcher of Westfield, New Jersey is an anonymous individual who stalked the owners of the house at 657 Boulevard, Westfield, New Jersey, from 2014 to 2017. The individual sent them multiple harassing letters signed "The Watcher." The owners never moved in out of fear for their family's safety.
In 2022, the Netflix series The Watcher debuted, based loosely on these events.