GhostWatcher (2002) on Netflix

Plot summary

Laura Kove is a young woman with agoraphobia. An attack one Halloween night left her badly shaken, and she has shut herself in, rarely leaving her apartment. Strange, frightening things then start happening in her home, and the disturbances grow worse. Cut off from the outside world, she goes online looking for help and finds Elizabeth Dean, who runs a well-known website about ghost hunting. Elizabeth is a confidence trickster who does not believe in ghosts and only pretends to hunt them. Laura asks for her help, but nothing Laura describes at first convinces Elizabeth that any of it is real.