what season does dexter's sister find out he's a killer
Debra Morgan In the season premiere, Debra witnesses Dexter murder Travis Marshall. Dexter claims that he went to collect evidence, and was surprised by Marshall; he then says that he "snapped" and killed him on impulse. Debra reluctantly helps him burn down the abandoned church where he killed Marshall, destroying the evidence of the crime. Later, Dexter comes home to Debra, who is surrounded by Dexter's victim's blood slides, a pack of knives, and other tools that Dexter uses to kill. Debra reluctantly asks Dexter if he is a serial killer. Dexter, taken aback, replies yes. Horrified, Debra recoils from Dexter as he admits that he is the "Bay Harbor Butcher", and that Harry taught him how to get away with murder.[17]
Emily Prentiss Brewster returned for guest appearances in the season 9 episode "200" in 2014 and the season 11 episode "Tribute" in early 2016 before returning as a regular cast member in the season 12 episode "Taboo" later in the year.[18]
Nick Amaro In "Born Psychopath", he is shot by a 10-year-old boy while apprehending him for abusing a young girl.
List of Lorien Legacies characters Six is portrayed by Teresa Palmer in the film adaptation