Contract killing is a form of murder or assassination in which one party hires another party to kill a targeted person or persons. It involves an illegal agreement which includes some form of payment, monetary or otherwise. Either party may be a person, group, or organization. Contract killing has been associated with organized crime, government conspiracies, dictatorships, and vendettas. For example, in the United States, the Jewish-American organized crime gang Murder, Inc. committed hundreds of murders on behalf of the National Crime Syndicate during the 1930s and '40s. Contract killing provides the hiring party with the advantage of not having to carry out the actual killing, making it more difficult for law enforcement to connect the hirer with the murder. The likelihood that authorities will establish that party's guilt for the committed crime, especially due to lack of forensic evidence linked to the contracting party, makes the case more difficult to attribute to the hiring party. Contract killers may exhibit serial killer traits, but are generally not classified as such because of third-party killing objectives and detached financial and emotional incentives. Nevertheless, there are occasionally individuals that are labeled as both contract killers and serial killers. A contract killer is colloquially known as a hitman. Contract killers who work for criminal organizations are often known as enforcers.
