Miami blood-spatter analyst and moonlighting serial killer Dexter Morgan spent the first season of Showtime's groundbreaking drama helping his police department track the Ice Truck Killer, a man who turned out to be the brother Dexter never knew. In Season Two, he helps hunt someone even closer...himself. When his Glad-bag graveyard is discovered at the bottom of the ocean, all of Miami buzzes about the Bay Harbor Butcher, the nocturnal crime fighter who litters the sea with body parts of bad guys.
The search for the Bay Harbor Butcher (and the ensuing cat and mouse game between Dexter and his colleagues) provides the overarching glue for Season Two. The middle episodes of the season feature the slippery Dexter trying to wiggle his way out of the grasp of the investigation, lead by new character FBI Special Agent Lundy (Keith Carradine), a professional everyman as unassuming as he is brilliant. Lundy's dedication and focus rival Dexter's and present a challenge for our hero even greater than his "game" with the Ice Truck Killer. Lundy's ritual and disciplined life of cucumber sandwich lunches and Chopin interludes clears his mind, giving him almost clairvoyance into the heart of his target.
The second principle plot centers on Dexter's new love interest, Lila. Early in the season, Dexter is able to explain away his erratic behavior to Doakes and Rita by pretending to be a recovering drug addict. His relationship with his sultry and insightful sponsor sparks tension between Dexter and his girlfriend and forces Dexter into chambers of his mind that have been closed for decades. In the arms of a troubled figure with a past nearly as dark as his own, Dexter feels understood for the first time.
Dexter's "improvements" in rehab, coupled with the relentless investigation of him by Doakes causes a reduction in body count for Season Two. Just as Season One established the winning formula of building a 12 episode serial plot accentuated with weekly self contained subplots with payoffs, Season Two also has small stories to keep the viewers entertained as the search for the Butcher continues. The difference between Seasons One and Two is that these small plots don't always involve Dexter killing someone. Season One almost had a reality-tv consistency with Dexter "voting someone off the island" each week. But sometimes Season Two episode plots are about his relationships with Rita, Lila or Doakes.
This is part of the more human Dexter presented in Season Two. His conscience gets to him a few times; he underestimates one of his victim's strength and then walks into a trap; he routinely gets outsmarted by Lundy; and he's unable to control his feelings toward Rita and her kids. He's come a long way from the unemotional science project of the first season. The extra dimensions to his character and a season-long plot that amazingly trumps the edge-of-your-seat plight of Season One's Ice Truck Killer are only two reasons why the series has improved since its sublime debut season and now fills the void left by The Sopranos as television's finest hour.