A temporada de estreia apresenta a vida dupla de Dexter na polícia de Miami e introduz seu primeiro grande rival. O confronto com o Assassino do Caminhão de Gelo desenterra segredos profundos sobre a infância traumática de Dexter e define o tom psicológico da série. Temporada 2: O Açougueiro de Bay Harbor

Lucas sat in front of his bulky desktop computer, the hum of the cooling fan filling his small bedroom. It was a Friday night, and he had a mission. His friends at the office had been whispering about a show called Dexter . "You have to watch it," they said. "It’s about a serial killer who only kills bad guys. It’s genius."

Esta temporada é focada no embate de Dexter contra os "Assassinos do Juízo Final" (Doomsday Killers).