In which you see Captain Flint rest under a sail at sea (8,6)

I believe the answer is:

treasure island

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'in which you see captain flint' is the definition.
The definition suggests a singular noun which matches the answer.

'rest under a sail at sea' is the wordplay.
'at sea' indicates anagramming the letters.
'rest'+'under'+'a'+'sail'='restunderasail'
'restunderasail' with letters rearranged gives 'TREASURE ISLAND'.

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(Other definitions for treasure island that I've seen before include "Long John Silver tale" , "R.L. Stevenson novel" , "... story by R.L. Stevenson" , "Robert Louis Stevenson novel" , "book - with 5a" .)

I've seen this clue in The Times.

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