Question

What is the difference between Serial Killer and Mass Murderer

-Serial killers have a psychological problem
-Serial Killer have a cool off period
-Serial Killers do not use guns
-Serial Killers kill more than 3 people

Answer 1

they have a cool off period.

serial killers kill more than 3 victims over a span of month maybe even years. however a mass murderer will kill over 3 victims in a short span of time.

Answer 2

Psycho problems..........