Hollow Treats

You're out alone this Halloween, which would be fine under normal circumstances. But recently there has been increasing cases of people being infected by an unknown parasitic entity causing people to becoming increasingly more aggressive. There are signs of course, but unfortunately for your, you're face blind. You can't rely on normal human body language to guess who's who. That's why you need to carefully peek into people's homes to find out the truth. Do you have what it takes to get the most candy this Halloween?