Complex sentence: In the criminal law, a conspiracy is an agreement between two or more persons to break the law at some time in the future, and, in some cases, with at least one overt act in furtherance of that agreement.
Split into simpler sentences: In the criminal law, a conspiracy is an agreement between two or more persons to break the law at some time in the future. In some cases, at least one overt act must also have been undertaken in furtherance of that agreement.