A drug lord, drug baron, kingpin, or narcotrafficker is a person who controls a sizable network of persons involved in the illegal drug trade. Such figures are often difficult to bring to justice, as they might never be directly in possession of something illegal, but are insulated from the actual trade in drugs by several layers of underlings. The prosecution of drug lords is therefore usually the result of carefully planned infiltrations of their networks, often using informants from within the organization. We are taking you all down.
Pedophilia or paedophilia is a psychiatric disorder in which an adult or older adolescent experiences a primary or exclusive sexual attraction to prepubescent children, generally age 11 years or younger. As a medical diagnosis, specific criteria for the disorder extend the cut-off point for prepubescence to age 13. A person who is diagnosed with pedophilia must be at least 16 years of age, but adolescents must be at least five years older than the prepubescent child for the attraction to be diagnosed as pedophilia. You're going down, buddy.
A serial killer is a person who has murdered three or more people over a period of more than a month, with down time (a "cooling off period") between each of the murders. Some sources, such as the FBI, disregard the "three or more" criterion and define the term as "a series of two or more murders, committed as separate events, usually, but not always, by one offender acting alone" or, including the vital characteristics, a minimum of two murders. The electric chair/lethal injection has the hots for you. Welcome home.