Film person cracking one grimace (10)

I believe the answer is:

cinemagoer

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'film person' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'cracking one grimace' is the wordplay.
'cracking' indicates anagramming the letters.
'one'+'grimace'='onegrimace'
'onegrimace' is an anagram of 'CINEMAGOER'.

Can you help me to learn more?

(Other definitions for cinemagoer that I've seen before include "Flicks fan" , "Who sees features" , "One sees picture" , "patron" , "Film fan" .)

I've seen this clue in The Daily Express.

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