Actors cast ready at last — hopes to include brief review (10)
I believe the answer is:
hypocrites
'actors' is the definition.
(people who pretend to hold certain views)
'cast ready at last hopes to include brief review' is the wordplay.
'cast' indicates an anagram.
'at last' indicates one should take the final letters.
'to include' is an insertion indicator.
'brief review' becomes 'crit' (abbreviation for 'criticism').
The final letter of 'ready' is 'y'.
'y'+'hopes'='yhopes'
'yhopes' with letters rearranged gives 'hypoes'.
'hypoes' going around 'crit' is 'HYPOCRITES'.
(Another definition for hypocrites that I've seen is " who only render lip service?".)