
In original US drama series, Dexter, which ran from 2006 to 2013, the master of concealment (played by Michael C. Hall) channelled his murderous urges – directed by an inner voice he calls his ‘dark passenger’ – into a ‘code’ created by his adoptive dad, cop Harry (James Remar).
Working as a blood-splatter expert with Miami Metro Police, the vigilante targeted those who’d escaped justice, taking out the trash and cleaning up his crime scenes.