Differences Between Mass, Spree and Serial Killers
| Atributes | Serial Killers | Mass Killers | Spree Killers |
| Victim Count | 5+ | 3+ | 4-5+ |
| Victim Rate | Months-Years | Hours-Days | Days-Weeks- Months |
| Kills At Victim Rate | 1-2 at one time | many at one time | 1-2 at a time |
| Common Killer | white/male/20-30 | White/Male/25-40 | White/Male/20-30 |
| Common Kill | stabbing/strangulation | shooting | Stabbing/Shooting |
| Common Weapon | knife/binding | gun | Knife/Gun |
| Common Victim | Females(Trait) | Females(Mostly) & Males | Females & Males |
| Organization Type | Disorganized/organized (3/4) | Disorganized | Disorganized |
| Motive | Sex/Rejection | Rejection/Revenge/ Deranged | Rejection/Revenge/ Deranged |
| Rape/Sadism | Yes(Org.)/Yes(Disorg.) | Rare/No | Maybe/No |
| Killing Attitude | To Go Uncaptured | Uncaring/Suicidal | To Go Uncaptured |