conspiracy [conspiracies](act of working in secret to obtain some goal) noun [UK: kən.ˈspɪ.rə.si] [US: kən.ˈspɪ.rə.si]It's not a conspiracy. = Non è una cospirazione.
machination [machinations](clever scheme or artful plot, usually crafted for evil purposes) noun [UK: ˌmæk.ɪ.ˈneɪʃ.n̩] [US: ˌmæ.ʃə.ˈneɪʃ.n̩]
plot [plots](secret plan to achieve an end) noun [UK: plɒt] [US: ˈplɑːt]