Not exactly where Daniel was in danger from jaws (3,2,4)

I believe the answer is:

den of vice

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'exactly where daniel was in danger from jaws' is the definition.
I know nothing about this answer so I can't tell whether this works.

'not' is the wordplay.
I cannot really see how this works, but
'not' could be 'no' (I've seen this in other clues) and 'no' is found within the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Irish Independent.

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