Crafty plotting (8)
I believe the answer is:
scheming
I believe this is a double definition.
'crafty' is the first definition.
(thesaurus)
'plotting' is the second definition.
(scheming is a kind of plotting)
(Other definitions for scheming that I've seen before include "Duplicitous" , "Plotting secretly" , "cunning" , "far from 10 [WIDE EYED]" , "Planning secretly" .)