Surprising plot turns (6)
I believe the answer is:
twists
'surprising plot turns' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for twists that I've seen before include "plot changes" , "gets another card turned over" , "Rotates; distorts" , "Wrenches out of normal shape" , "Interweaves or gives spiral form to" .)