I can totally relate! I think that's part of the reasons I work 3rds, I'm always in a locked building, some jobs even had security. I feel safe in them, although I have had quite a few paranoid episodes when I was sure my coworkers were plotting against me.

I also hear people saying my name, usually upon waking. I also hear a muffled sentence which appears to be a question. I say what, and then realize I'm the only one home. I have experienced this with my husband, I think he asked me a question and ask him to repeat it and he gives me the crazy eye and tells me he didn't say anything.