Dream About Encountering A Serial Killer And Being Threatened By Him

I'm with a friend, i can't place who and their cousin or friend. We're hanging out and they bring up someone they know who was a serial killer and a genius. They show me his picture and name one Facebook. He's "Sean Rank". The next thing I remember is I'm working for the police some how and there's a murder. A woman is found dead in the pool. At this part of the dream I'm having really bad anxiety. I'm worried about my family. I'm talking to a cop when I get an email. It's from Sean. He's threatening me. The cops are going crazy but they aren't necessarily protecting me. I go home (which is a hotel) my parents parents aren't really that worried about the situation....until I get another email. My dad reads it and I text a cop I was working with. He says they'll check it out in the morning. We'll before we go to bed, my parents decide they want to stay somewhere with more room, so dad and Isaac (little brother) leave. And mom and I have to finish putting stuff away and packing. but i hear a weird sound at the door. Mom goes to look buy I slam it shut because I'm scared. I look under the door and theyres a stack of blankets and a note for me with one Penny on it. I call the police and they're there quickly. They never seem worried about protecting me though, just about catching him. Mom and I go to the other place we're staying too. The next part I remember is we're at a banquet hall, and I feel super anxious. Everyone's talking to me since they know about the emails and letters Sean is sending me. But all I feel is anxious and scared in the big crowd (in real life I don't like big groups of people). Sean's cousin is thre and I ask him questions about Sean and he avoids them all and leaves. Next thing I know there is a voice on the loud speaker. It says for everyone to throw their phones on the floor with their keys. If they don't he'll kill someone. He had set a bomb in the building. We all listened. He said no one move but my mom kept moving to get closer to my brother. He said e all the have a few seconds to run toward the door til he said stop. When he tells us to stop my mom keeps going and it scares me. Finally he tells us to run outside. And I'm running but I'm scared that Sean is waiting for me or will hurt my family. I want to yell that people need to let small people out first but I'm afraid they'll think I'm trying to get out first because I'm small. I find Isaac and run, but I can't find my mom. I'm outside and I feel like he's following me and going to hurt me or Isaac. Then I woke up, I fell back asleep and was almost lucid dreaming because I was making choices but Sean catches me. And says if I don't do what he tells me then he will kill me brother. So I obeyed him. It was super scary