Dexter Season 1 Episode 2 (10/08/06)
In this episode, Dexter learns more about the Ice Truck Killer. Somehow, this serial murderer is familiar with the show's title character.
The hour closes with evidence - in the form of the infamous doll head left for Dexter in his freezer being moved - that the Ice Truck Killer wanted Dexter to come find him. The forensics experts vows to do just that.