Crime writer’s conclusion to book worrying (7)

I believe the answer is:

keating

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'crime writer's conclusion to book worrying' is the definition.
I can't tell whether this definition defines the answer.

'conclusion to book worrying' is the wordplay.
'conclusion to' suggests the final letters.
'worrying' becomes 'eating' (eating is a kind of worrying).
The final letter of 'book' is 'k'.
'k'+'eating'='KEATING'

Can you help me to learn more?

(Another definition for keating that I've seen is " Ronan --, Irish singer".)

I've seen this clue in The Times.

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