 Lindsay was initially against casting Hall, based on seeing him on "Six Feet Under", but after he saw Hall speak one line of the script, Lindsay changed his mind, describing Hall as "absolutely perfect" to portray Dexter.To prepare for the part, Hall read various books on the psychology of serial killers, read transcripts of interviews with serial killers, and spent time with the head blood-spatter analyst at the Miami precinct.He also watched people in New York restaurants to get a feel for what it would be like to stalk them.