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Police are baffled when a prostitute's murder matches in every detail a series of killings for which Derek Tyler has already been caught and jailed for. Tony knows it can't be a copycat, because in sexual homicides every killer has their own unique signature, but if this isn't someone imitating Derek's atrocities, then how are the new killings happening at all?
This episode premiered worldwide August 18, 2006 on ABC in Australia.
"Torment" was based on the 2004 novel, The Torment of Others by Val McDermid.