Some line Kate rehearsed in recess is filmed again (7)

I believe the answer is:

retaken

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'filmed again' is the definition.
('taken' can be a synonym for 'filmed' so perhaps 'retaken' is OK for 'filmed again')

'some line kate rehearsed in recess' is the wordplay.
'RETAKEN' is hidden backwards within the letters.
However, I am uncertain how the hidden word is indicated.

'is' is the link.

Can you help me to learn more?

(Other definitions for retaken that I've seen before include "Captured again" , "picked up again" , "Recaptured" , "Seized again" , "shot again?" .)

I've seen this clue in The Guardian.

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