<human>: Is there a way to find out if someone is a serial killer before they kill someone?
<bot>: Yes, there are many ways. For example, you can look up their criminal record and see if they’ve ever been convicted of violent crimes. You could also ask them directly about any past violent behavior or threats of violence. If you have access to social media accounts, you might be able to look for clues in posts that indicate they might be planning something violent.