Daggers lit from behind in fights (9)

I believe the answer is:

stilettos

'daggers' is the definition.
(stiletto is a kind of dagger)

'lit from behind in fights' is the wordplay.
'from behind' shows that the letters should be reversed in order.
'in' is an insertion indicator.
'fights' becomes 'set-tos' (a set-to is a fight or confrontation).
'lit' reversed gives 'til'.
'til' going into 'settos' is 'STILETTOS'.

I've seen this clue in The Telegraph.

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