The premise Dexter DVD of following a serial killer who chooses as his victims criminals who would have otherwise not been punished is by now, after four seasons, a character we can all understand - emotionally, motivationally, and as a brilliant law enforcement team member. House MD DVD But the coups of the season was the addition of Julia Stiles who does some of the finest work of her career here. Enough said. The suspense is what drives this show! When executive producer Clyde Phillips exited Dexter at the end of the fourth season, he left the remaining cast and crew with a puzzle worthy of a cackling supervillain.