Tricky question taken from quite a series (6)
I believe the answer is:
teaser
'tricky question' is the definition.
(I've seen this before)
'taken from quite a series' is the wordplay.
'taken from' indicates a hidden word.
'TEASER' is hidden within 'quite a series'.
(Other definitions for teaser that I've seen before include "One who irritates playfully" , "Riddle" , "Introduction to arouse curiosity" , "Conundrum" , "Difficult question" .)