


However, while many serial killers display some sort of pattern in their behaviour, it’s not always easy linking a series of murders over time to the work of one person. Many people mistakenly think that a serial killer has to have the same ‘modus operandi’ and that they target the same types of victims each time and that they always kill people in the same way. This distinguishes serial killers from mass murderers (who kill at least four people in a short amount of time without any ‘cooling off’ period) and spree killers (who kill at least two people in different locations over a short amount of time, again without any ‘cooling off’ period). Although the definition and ‘criteria’ of a serial killer can vary between different law enforcement agencies and psychologists, the term is typically applied to any person who kills at least two victims with a significant ‘down time’ between the murders. Serial killers are some of the most fascinating and intriguing criminals.
