Took action about performer almost getting stitched up (7)
I believe the answer is:
sutured
'stitched up' is the definition.
(I've seen this in another clue)
'took action about performer almost' is the wordplay.
'took action' becomes 'sued'.
'about' means one lot of letters goes inside another.
'performer' becomes 'turn' ('turn' can mean a performer as well as their act).
'almost' means to remove the last letter (most of the word but not all of it).
'turn' with its last letter taken away is 'tur'.
'sued' enclosing 'tur' is 'SUTURED'.
'getting' acts as a link.
(Other definitions for sutured that I've seen before include "Rust due {anag.)" , "stitched up" .)