Lawless Graham is no crime writer (5,5)

I believe the answer is:

ngaio marsh

'crime writer' is the definition.

'lawless graham is no' is the wordplay.
'lawless' is an anagram indicator.
'graham'+'is'+'no'='grahamisno'
'grahamisno' with letters rearranged gives 'NGAIO MARSH'.

I've seen this clue in The Independent.

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