Does it sift the actors? (6)
I believe the answer is:
screen
'sift the actors?' is the definition.
'screen' can be an answer for 'sift' (screening is a kind of sifting). I'm not certain of the 'the actors?' bit.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for screen that I've seen before include "Show; cover" , "Upright partition" , "Room divider" , "Cinema feature" , "put on show" .)