Dexter Morgan: (to Debra after being caught red-handed killing Travis) I can do you one last forensic sweep like you always ask me to do... Travis was here, he came at me with his sword... I fought him off, I knocked him out...
Debra Morgan: How did he end up wrapped in plastic on the alter?
Dexter Morgan: I snapped.
Debra Morgan: You snapped... What the fuck does that mean?!?
Dexter Morgan: (while still in shock) ...There's been a lot of anger inside me, that when I looked at Travis and thought about everything he did... I wanted him dead, so I killed him.
Debra Morgan: ...Still doesn't explained why he's wrapped up like that.
Dexter Morgan: (after taking another look at Travis' corpse with his knife in his chest) ...I didn't even think about it... I'm a forensic expert and this is just second nature not to leave a trace.
Debra Morgan: Jesus Dex... why the fuck didn't you call me?
Dexter Morgan: I wasn't exactly in the best state of mind.