conspiracy:
1) An illegal and/or treacherous plan by two or more sentients  (manifesting itself in either words or deeds) to injure or destroy  a sentient being or recognizable group. This includes utilizing  unlawful means to do something which in and of itself is lawful.  SYN stratagem, where the means of gaining an end are carefully contrived.  Compare MACHINATIONor PLOT, which imply subtle maneuvering  intended to accomplish an end.