Film critic Mitchell (5)
I believe the answer is:
elvis
'film critic mitchell' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for elvis that I've seen before include "The familiar King of rock music" , "Lives for rock'n'roll king" , "Mr Presley" , "Performing artist once" , "US singer; lives (anag.)" .)