Pack of plotters (5)
I believe the answer is:
cabal
'pack of plotters' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for cabal that I've seen before include "Caucus" , "Group of conspirators" , "Small group of (eg political) plotters" , "Secret political group" , "Clique of plotters" .)