Get back concerning secret identity (7)

I believe the answer is:

recover

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'get back' is the definition.
(I've seen this before)

'concerning secret identity' is the wordplay.
'concerning' becomes 're'.
'secret identity' becomes 'cover' (I can't justify this - if you can you should believe this answer much more).
're'+'cover'='RECOVER'

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(Other definitions for recover that I've seen before include "Bring back" , "Rescue" , "get fit again" , "Get well again" , "Rally, get better" .)

I've seen this clue in the Sydney Morning Herald.

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