Karin —, author of crime novels Pretty Girls, Triptych and Indelible (9)

I believe the answer is:

slaughter

(Other definitions for slaughter that I've seen before include "Killing (of farm animals)" , "Kill cruelly" , "Butcher" , "Murder" , "Glare thus to cause bloodthirsty killing" .)

I've seen this clue in The Mirror.

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