MACHINATION
intrigue, machination
(noun) a crafty and involved plot to achieve your (usually sinister) ends
Source: WordNet® 3.1
Etymology
Noun
machination (countable and uncountable, plural machinations)
A clever scheme or artful plot, usually crafted for evil purposes.
The act of machinating or plotting.
Source: Wiktionary
Mach`i*na"tion, n. Etym: [L. machinatio: cf. F. machination.]
1. The act of machinating. Shak.
2. That which is devised; a device; a hostile or treacherous scheme;
an artful design or plot.
Devilish machinations come to naught. Milton.
His ingenious machinations had failed. Macaulay.
Source: Webster’s Unabridged Dictionary 1913 Edition