Dating Dangers Turns to Stalking on Bumble or Hinge, Who Are they and Why They Won't Give Up, 50 Ways to Leave Your Lover. Many serial killers began as lust stalkers, very fine line that can be crossed.  Sarasota Private Investigator Bill Warner is an Expert at Social Media Investigations. How do find out that you have a stalker, how do you deal with this classic situation? Knock on your door, it's 3:00 am, guy outside is yelling your name, continues knocking on your door, you call police, they arrive and he is gone. Next day same thing all over again, he's yelling " If I can't have you no one else will " this is a death threat, how do you get rid of this maniac? They make empty promises to prolong contact. Example: “This is the last time, I swear. I just need closure.” Experts say that many stalkers are charming and seemingly “average” people that you would never guess have an unhealthy obsession with their ex, their neighbor or a complete stranger. Peopl...