What is criminology what are the various theories of criminology?

Criminology is the use of patterns within crimes to anticipate, categorize, and ultimately catch criminals. It relies on two main theories. The first is that a serial criminal will operate in the same way with each crime until something forces him to change. The second is that a criminal will knowingly or unknowingly leave a mark or signature on every crime based on either what was done, not done, victimology, crime, weapon, and more.