Dexter: New Blood brings Deb back as the show's new Dark Passenger, and here's why a dead family member always plays that role for the titular killer. The Showtime reboot recently premiered, setting up Dexter Morgan's (Michael C.
Hall) new life as «Jim Lindsay» in the snowy, sleepy town of Iron Lake, NY. Though the original dramedy left plenty of characters behind, the revival brings back the likes of his son, Harrison, and the ghost of his adoptive sister, Deb (Jennifer Carpenter).
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