1. Threatening Calls
Your home alone having a quiet night in - because everyone has gone out or whatever. Unusually, you start receiving unexpected threatening calls from a stalker. Given the fact that your absolutely alone and its really late, instead of freaking out, cutting the phone off and calling the cops like any normal person would do, you decide to keep the conversation rolling. Which gives the stalker the perfect chance to get into the house. And when you do start showing signs of concern its all over... as the killers right behind you!