High Quality Content by WIKIPEDIA articles! Contract killing is a form of murder, in which one party hires another party to kill a target individual or group of people. It involves an illegal agreement between two parties in which one party agrees to kill the target in exchange for consideration, monetary, or otherwise. The hiring party may be a single person, a group of people, a company, or any other kind of organization. The hired party may also be one person, such as a hitman, or a group of people, or an organization.