When one may legally agree to scene of nag being shot (3,2,7)

I believe the answer is:

age of consent

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'when one may legally agree' is the definition.
I can't tell whether this definition defines the answer.

'to scene of nag being shot' is the wordplay.
'being shot' indicates an anagram.
'to'+'scene'+'of'+'nag'='tosceneofnag'
'tosceneofnag' is an anagram of 'AGE OF CONSENT'.

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(Other definitions for age of consent that I've seen before include "Beyond which relations allowed" , "Time when agreement becomes legally valid" , "Legal majority?" .)

I've seen this clue in The Times.

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