Release after confession without charge for entering (9,4)

I believe the answer is:

admission free

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'without charge for entering' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'release after confession' is the wordplay.
'release' becomes 'free' (synonyms).
'after' means one lot of letters go next to another.
'confession' becomes 'admission' (I've seen this before).
'free' put after 'admission' is 'ADMISSION FREE'.

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I've seen this clue in The Globe and Mail.

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