5.09 Conspiracy-Definition of Conspiracy is a legal definition in the United States that describes an agreement between two or more people to commit a criminal act or to commit an act that is itself unlawful, such as fraud or perjury. It is an agreement between two or more persons to commit an illegal act, or to accomplish a legal act by illegal means. The agreement must involve an overt act in furtherance of the conspiracy. There are several types of conspiracies. These include: criminal conspiracy, civil conspiracy, and political conspiracy. Criminal conspiracy is an agreement between two or more people to commit a criminal act. Civil conspiracy is an agreement between two or more people to commit an illegal act in order to gain a private advantage or to cause injury to another person. Political conspiracy is an agreement between two or more people to commit a criminal act in order to influence a political outcome.