Crossword Genius

The setter's penetrating clues cryptically shed light (9)

Ross

I believe the answer is:

luminesce

'shed light' is the definition.

'the setter's penetrating clues cryptically' is the wordplay.
'the setter's' becomes 'mine'.
'penetrating' is an insertion indicator.
'cryptically' indicates an anagram.
'clues' anagrammed gives 'lusce'.
'mine' going inside 'lusce' is 'LUMINESCE'.

(Another definition for luminesce that I've seen is " Glow".)

I've seen this clue in The Times.
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