complot

[F. complot, prob. for comploit, fr.L. complicitum, prop. p. p. of complicare, but equiv. to complicatio complication, entangling. See Complicate, and cf. Plot.]
A plotting together; a confederacy in some evil design; a conspiracy.

I know their complot is to have my life.

Com·plot
v. t. & i.

[imp. & p. p. Complotted; p. pr. & vb. n. Complotting.]
[Cf. F. comploter, fr. complot.]
To plot or plan together; to conspire; to join in a secret design.

We find them complotting together, and contriving a new scene of miseries to the Trojans.