Turning to police, lady acted nonchalantly (6,2,4)

I believe the answer is:

played it cool

'acted nonchalantly' is the definition.

'turning to police lady' is the wordplay.
'turning' indicates an anagram.
'to'+'police'+'lady'='topolicelady'
'topolicelady' with letters rearranged gives 'PLAYED IT COOL'.

I've seen this clue in The Telegraph.

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