Can you scare a person to death?

Yes, you can scare someone to death. When someone is scared, their body produces a chemical called Adrenaline. Adrenaline is a naturally produced chemical that does all sorts of things. Adrenaline makes your heart beat faster, muscles function more efficiently, etc. However, too much of this chemical can cause death, so theoretically, yes, even though it would be very hard to do so, you can scare someone to death.